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The SI unit of electric current is...

The SI unit of electric current is

A

ampere

B

volt

C

coulomb

D

joule

Text Solution

Verified by Experts

The correct Answer is:
A
The rate of flow of electric charge is known as electric current and the SI unit of electric current is ampere.
Current = charge/time
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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

  • What is the SI unit of electric current?

    A
    Oersted
    B
    Ampere
    C
    Ohm
    D
    Volt

  • 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

    • 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.

    State the SI unit of electric current and define it.

    (a) Define electric current. What is the SI unit of electric current. (b) One coulomb of charge flows through any cross-section of a conductor in 1 second. What is the current flowing through the conductor? (c) Which instrument is used to measure electric current? How should it be connected in a circuit? (d) What is the conventional direction of the flow of electric current? How does it differ from the direction of flow of electrons? (e) A flash of lightning carries 10C of charge which flows for 0.01s. what is the current? If the voltage is 10MV, what is the energy?

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