Q17 of 330 Page 11

Define the unit of electric current (or Define ampere).

SI unit of electric current is ampere (A). Ampere is the flow of electric charges through a surface at the rate of one coulomb per second.


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If a potential difference of 10 V causes a current of 2 A to flow for 1 minute, how much energy is transferred?

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What is an electric current? What makes an electric current flow in a wire?

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What is an ammeter? How is it connected in a circuit? Draw a diagram to illustrate your answer.

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Write down the formula which relates electric charge, time and electric current.