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The SI unit of electric current is...

The SI unit of electric current is

A

ampere

B

candela

C

mole

D

none of these

Text Solution

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The correct Answer is:
A
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The rate of flow of charge in a circuit is called electric current. In other words, it is the amount of charge flowing per second. It is denoted by the letter I. If Q is the charge which is flowing through a conductor in time t, then current is given by i = Q/t Unit of current: The S.I unit of current is ampere and it is denoted by the letter 'A'. The S.I unit of Q is coulomb and that oft is second. Thus, the S.I unit of electric current is ("1 coulomb")/("1 second") = 1A If there is a current of 10 amperes in a circuit for 10 minutes, what quantity of electric charge flows in through the circuit?

The rate of flow of charge in a circuit is called electric current. In other words, it is the amount of charge flowing per second. It is denoted by the letter I. If Q is the charge which is flowing through a conductor in time t, then current is given by i = Q/t Unit of current: The S.I unit of current is ampere and it is denoted by the letter 'A'. The S.I unit of Q is coulomb and that oft is second. Thus, the S.I unit of electric current is ("1coulomb")/("1 second") = 1A How much current must there be in a circuit if 100 coulombs flow past a point in the circuit in 4 seconds?

Knowledge Check

  • The unit of electric current is denoted by

    A
    I
    B
    E
    C
    A
    D
    a

  • The unit of electric current is denoted by

    A
    I
    B
    E
    C
    A
    D
    a

  • What is the SI unit of electric current?

    A
    Oersted
    B
    Ampere
    C
    Ohm
    D
    Volt

    • Similar Questions

    Explore conceptually related problems

    The rate of flow of charge in a circuit is called electric current. In other words, it is the amount of charge flowing per second. It is denoted by the letter I. If Q is the charge which is flowing through a conductor in time t, then current is given by i = Q/t Unit of current: The S.I unit of current is ampere and it is denoted by the letter 'A'. The S.I unit of Q is coulomb and that oft is second. Thus, the S.I unit of electric current is ("1 coulomb")/("1 second") = 1A How much time is required for 10 coulombs of charge to flow past a point if the rate of flow (current) is 2 amperes?

    The SI unti of electric current.

    Write the SI unit of electric current.

    SI unit of electric current is………. And that of the potential difference is……….

    State the SI unit of electric current and define it.

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