PHYSICS 1.A bulb is rated at 330V-110W. What doyou think is its resistance? Three suchbulbs burn for 5hrs at a stretch. What isthe energy consumed? Calculate the costin rupees if the rate is 70 paise per unit?2. Calculate the resistance of 2 km longcopper wire of radius 2 mm. (Resistivityof copper = 1.72 x 10%)3. What connection is used in domesticappliances and why?4.. A 250 watt electric bulb is lighted for5 hours daily and four 6 watt bulbs arelighted for 4.5 hours daily. Calculate theenergy consumed (in kWh) in the monthof February5.. A torch bulb is rated at 3V and600mA. Calculate it's(a) Power b) Resistance c) Energyconsumed if it is lighted for 4 Hrs.6. State and derive joule's law. Anelectric iron consumes energy at rate of420w when heating is at maximum rateand 180 w when heating is at minimumThe voltage is 220V What is the currentand resistant in each case?

PHYSICS 1.A bulb is rated at 330V-110W. What doyou think is its resi

1.	PHYSICS 1.A bulb is rated at 330V-110W. What doyou think is its resistance? Three suchbulbs burn for 5hrs at a stretch. What isthe energy consumed? Calculate the costin rupees if the rate is 70 paise per unit?2. Calculate the resistance of 2 km longcopper wire of radius 2 mm. (Resistivityof copper = 1.72 x 10%)3. What connection is used in domesticappliances and why?4.. A 250 watt electric bulb is lighted for5 hours daily and four 6 watt bulbs arelighted for 4.5 hours daily. Calculate theenergy consumed (in kWh) in the monthof February5.. A torch bulb is rated at 3V and600mA. Calculate it's(a) Power b) Resistance c) Energyconsumed if it is lighted for 4 Hrs.6. State and derive joule's law. Anelectric iron consumes energy at rate of420w when heating is at maximum rateand 180 w when heating is at minimumThe voltage is 220V What is the currentand resistant in each case?
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