Q26 of 330 Page 12

Which instrument is used to measure electric current? How should it be connected in a circuit?

An ammeter is an apparatus which is used to measure electric current in a circuit. It should be connected in series with the circuit.


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26

Define electric current. What is the SI unit of electric current.

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A flash of lightning carries 10 C of charge which flows for 0.01 s. What is the current? If the voltage is 10 MV, what is the energy?