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The rate of flow of charge in a 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
`("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?

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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 ("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?

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?

Knowledge Check

  • A current of 150 mA flows through a circuit for 2 min. Find the amount of charge that flows through the circuit.

    A
    18 C
    B
    20 C
    C
    15 C
    D
    16 C

  • An electric bulb draws a current of 0.25 A for 20 minutes. Calculate the amount of electric charge that flows through the circuit.

    A
    300C
    B
    400C
    C
    500C
    D
    600C

  • If the current flowing through a circuit is 0.6 A for 6 mins ,the amount of electric charge flowing through it is _____.

    A
    360 C
    B
    216 C
    C
    60 C
    D
    36 C

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