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1. What does an electric circuit mean? 2. Define the unit of current. 3. Calculate the number of electrons constituting one coulomb of charge. |
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Answer» 1.ELECTRIC circuit, path for transmitting electric current. An electric circuit includes a DEVICE that gives energy to the charged particles constituting the current, such as a battery or a generator; DEVICES that use current, such as lamps, electric motors, or computers; and the connecting wires or transmission lines.2.The SI unit of electric current is the AMPERE, or amp, which is the flow of electric charge ACROSS a surface at the rate of one coulomb per second. The ampere (symbol: A) is an SI base unit Electric current is measured using a device called an ammeter3.One electron possesses a charge of 1.6 ×10-19C, i.e., 1.6 ×10-19C of charge is contained in 1 electron. Therefore, 6 x 1018 electrons constitute one coulomb of charge. |
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