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tion:1. (R3R4/R3+R4)+R1+R22.Joule's law of heating states that when a current 'i ' passes through a CONDUCTOR of resistance 'r' for time 't' then the heat DEVELOPED in the conductor is equal to the product of the square of the current, the resistance and time.3.If the current is much more than 4.5 amperes, the ELECTRIC iron can get damaged. ... Thus, We must use the 5 A fuse. It will protect the iron from voltage and current overloading. In your calculations, you must have taken an improper value of Power, something like 100 watts, which gave you your answer.4.When appliances are connected in series, total resistance of CIRCUIT increases. This decreases the current and hence the power through each appliance. In order to avoid this loss of current, and hence of power, through bulb and heater, they are connected in parallel.

hiExplanation:Typically the VSD system consists of a three-phase AC induction motor and a variable frequency power supply. The variable frequency power supply uses solid state COMPONENTS to PRODUCE a pulse-width modulated current that varies the power and frequency supplied to the motor. This enables accurate control of the motor speed over a broad range. VSDs are used in CONNECTION with pump and fan applications to vary the pump or fan speed according to demand, often with large savings in ENERGY USE.

hiExplanation:A ray of LIGHT passing through the FOCUS of a concave mirror will be REFLECTED parallel to the PRINCIPAL axis of the mirror.

p=1/fp=1/-2...(V SHD ALWAYS TAKE NEGATIVE)p=0.5 D

Acceleration due to gravity = G=R2GMearth, R = DISTANCE from the centre of the EARTH.At a HEIGHT = R above earth's surface g=(R+R)2GMearth=4R2GMearth=4g

frequencies of light travel at DIFFERENT VELOCITIES. Because of refraction, the different velocities MAKE the angles of refraction different, causing the light to travel in SLIGHTLY different directions.

Infrared vs Radio TransmissionInfrared TransmissionInfrared technology uses diffuse light reflected at walls, furniture etc. or a directed light if a line of sight (LOS) exists between sender and receiver.Infrared light is the part of the electromagnetic spectrum, and is an electromagnetic form of radiation. It comes from the heat and thermal radiation, and it is not visible to the naked eyes.In infrared transmission, senders can be simple light emitting diodes (LEDS) or laser diodes. Photodiodes act as receivers.Infrared is used in wireless technology devices or systems that convey data through infrared radiation. Infrared is electromagnetic energy at a wave length or wave lengths somewhat longer than those of red light.Infrared wireless is used for medium and short range communications and control. Infrared technology is used in instruction detectors; robot control system, medium range line of sight laser communication, cordless microphone, headsets, modems, and other peripheral devices.Infrared radiation is used in scientific, industrial, and medical application. NIGHT vision devices using active near infrared illumination allow people and animals to be observed WITHOUT the observer being detected.Infrared transmission technology refers to energy in the region of the electromagnetic radiation spectrum at wavelength longer than those of visible light but shorter than those of radio waves.Infrared technology allows computing devices to communicate via short range wireless signals. With infrared transmission, computers can transfer files and other digital data bidirectional.Advantages of infraredThe main advantage of infrared technology is its simple and extremely cheap senders and receivers which are integrated into nearly all mobile devices available today.No licenses are REQUIRED for infrared and shielding is very simple.PDAs, laptops, notebooks, mobile phones etc. have an infrared data association (IrDA) interface.Electrical devices cannot interfere with infrared transmission.Disadvantages of InfraredDisadvantages of infrared transmission are its low bandwidth compared to other LAN technologies.Limited transfer rates to 115 Kbit/s and we know that even 4 Mbit/s is not a particular high data rate.Their main disadvantage is that infrared is quite easily shielded.Infrared transmission cannot penetrate walls or other obstacles.Typically, for good transmission quality and high data rates a LOS (Line of site), i.e. direct connection is needed.Radio TransmissionAlmost all networks use radio waves for data transmission, e.g., GSM at 900, 1800, and 1900 MHz, DECT at 1880 MHz etc. Radio transmission technologies can be used to set up ad-hoc connections for work groups, to connect, e.g., a desktop with a printer without a wire, or to support mobility within a small area.The two main types of radio transmission are AM (Amplitude Modulation) and (FM) Frequency Modulation.FM minimizes noise and provides greater reliability. Both AM and FM process sounds in patterns that are always varying of electrical signals.In an AM transmission the carrier wave has a constant frequency, but the strength of the wave varies. The FM transmission is just the opposite; the wave has constant amplitude but a varying frequency.Usually the radio transmission is used in the transmission of sounds and pictures. Such as, voice, music and television.The images and sounds are converted into electrical signals by a microphone or video camera. The signals are amplified, and transmitted. If the carrier is amplified it can be applied to an antenna.The antenna converts the electrical signals into electromagnetic waves and sends them out or they can be received. The antenna consists commonly of a wire or set of wires.Advantages of Radio TransmissionAdvantages of radio transmission include the long-term experiences made with radio transmission for wide area networks (e.g. microwave links) and mobile cellular phones.Radio transmission can cover larger areas and can penetrate (thinner) walls, plants, furniture etc.Additional coverage is gained by reflection.Radio typically does not need a LOS (Line of Site) if the frequencies are not too high.Higher transmission rates (e.g. 54 Mbit/s) than infrared (directed laser links, which offer data rates well above 100 Mbit/s).Disadvantages of Radio TransmissionRadio transmission can be interfered with other senders, or electrical devices can destroy data transmitted via radio.Bluetooth is simple than infrared.Radio is only permitted in certain frequency bands.Shielding is not so simple.Very limited ranges of license free bands are available worldwide and those that are available are not the same in all country.

1/4 is the CORRECT ANSWER of that QUESTION

heatExplanation:

A person with hypermetropia/hyperopia or long SIGHT can see clearly objects far away from them, but not close to them. This is caused by the SHAPE of the eye - the eyeball is slightly too SHORT. It is corrected by SPECTACLES or CONTACT lenses with lenses which are 'plus' or convex in shape.

" MENDELEEV's Periodic law " states that the physical and CHEMICAL properties of an element are the Periodic function of their atomic MASSES. ... It helped in the CORRECTION of atomic mass of some of the elements .

Concave mirrors can produce both REAL and VIRTUAL images; they can be upright (if virtual) or inverted (if real); they can be behind the mirror (if virtual) or in front of the mirror (if real); they can also be ENLARGED, REDUCED, or the same size as object. 2.

Geometric length: Geometric length is the measure of total length of magnet. A bar magnet consist of two equal and opposite magnetic pole separated by a small distance. Poles are not exactly at the ends. The shortest distance between two poles is called EFFECTIVE length and is LESS than its geometric length.Magnetic length = 0.84 * geometric lengthGeometric length = 2*5/0.84 = 11.905 cmHope this HELPS.

riod=2min=120secFrequency =1/Time period=>1/120=>0.0083 HzHence ANSWER is B)Hope it HELPS you.

rods are used in nuclear reactors to control the fission rate of uranium or plutonium. Their compositions includes chemical elements such as BORON, CADMIUM, silver, or INDIUM, that are capable of ABSORBING many neutrons without themselves fissioning.

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tion:The specific HEAT capacity of a substance is the heat capacity of a sample of the substance divided by the mass of the sample. Informally, it is the amount of ENERGY that must be added, in the form of heat, to one unit of mass of the substance in ORDER to cause an increase of one unit in its TEMPERATURE!! I hope this will help you !!

tion:LINEAR magnification is the ratio of the SIZE of object and image. Angular magnification is the ratio of the angle SUBTENDED by object and image. Subtended ANGLES are related to the linear size by non-linear trigonometric functions and depend on the distance from image to EYE.

Explanation:An object is said to be in uniform MOTION when its velocity is CONSTANT..the object is neither ACCELERATING nor deceleratingHOPE IT HELPS!have a great DAY

bhope it will HELP you. Thanks.Now PLEASE MARK me as a BRAINLIEST.

what should be ANSWERED

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23Explanation:(5 + ) (5 - )⇒      (5)² - ()²                                    [USING IDENTITY (a+b)(a-b) = a²-b²]⇒       25 - 2⇒       23

the PEOPLE affected early time use magnet at night TIMES with the help of star in the night the NAME of the star is NORTH star

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1:9Explanation:GIVEN,R1:R2=1:3volume 4/3pie r1 CUBE / 4/3pie r2 cube

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1.nerve cell2.fat cell3.muscle cell4.nerve CELL

a TIME for all PEOPLE is PRACTICALLY GIVING or SPENDING some time with them

rehere is your ANSWER In physics, gravitational acceleration is the free fall acceleration of an object in VACUUM — without any drag. This is the steady GAIN in speed caused exclusively by the force of gravitational attraction.Hope it helped U plz mark as brianliest

th POLE and the south pole are the poles that must face each other in a MAGNET in order to create gravity.Here is an EXAMPLE:If they face opposite poles such as North and South they PULL towards eachother but if they simmilar poles, they won't create any gravity.Red - North              Blue - South

The gravity of EARTH, which is denoted by g, refers to the acceleration that is imparted to OBJECTS due to the distribution of MASS within Earth. In SI units this acceleration is measured in metres per second squared (in symbols, m/s2) or equivalently in newtons per KILOGRAM (N/kg). ... The nominal "average" value at the Earth's surface, known as standard gravity is, by definition, 9.80665 m/s2 (about 32.1740 ft/s2).Hope it helps U......Mark it as brainliest....

Active Energy vs. If an OBJECT is moving, it is said to have kinetic energy (KE). Potential energy (PE) is energy that is "stored" because of the position and/or arrangement of the object. The CLASSIC EXAMPLE of potential energy is to pick up a BRICK. When it's on the ground, the brick had a CERTAIN amount of energy.

s law of UNIVERSAL gravitation is usually STATED that every particle attracts every other particle in the universe with a force which is directly proportional to the PRODUCT of their masses and inversely proportional to the SQUARE of the distance between their centers.

SHM STANDS FOR LINEAR SIMPLE HARMONIC MOTION.IT IS DEFINED AS THE LINEAR PERIODIC MOTION OF A BODY.IN THIS MOTION THE RESTORING FORCE IS ALWAYS DIRECTED TOWARDS THE MEAN POSITION AND IT,S MAGNITUDE IS ALWAYS PROPORTIONAL TO DISPLACEMENT FROM MEAN POSITIONHOPE YOU LIKE IT

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