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Define the unit of current....

Define the unit of current.

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The `SI` unit of current is called an ampere (A) Current flowing through a conductor is said to be `1` ampere if `1` coulomb of charge flows through it in `1` second, i.e.,
`1 "ampere" (A) = (1 "coulomb" ( C))/(1 "second" (s)), i.e., 1 A = (I C)/(1 s) = 1 C s^-1`.
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Name and define the SI unit of current.

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Knowledge Check

  • In which system of units 'Ampere' is the unit of current?

    A
    CGS System
    B
    FPS system
    C
    SI System
    D
    MKS system

  • In which system of units 'Ampere's is the unit of current ?

    A
    CGS System
    B
    FPS system
    C
    SI System
    D
    MKS system

  • In which system of units 'Ampere' is the unit of current?

    A
    CGS System
    B
    FPS system
    C
    SI System
    D
    MKS system

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    (a) Derie an expression for the force between two long parallel current carryng condcutors. (b) Use this expression to define SI unit of current. (c ) A long straight wire AB carries a current I. A proton P travels with a speed v, parallel to the wire, at a distance d from it in a direction opposite to the current as shown in the fig. What is the force experienced by the proton and what is its direction?

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