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The field due to a long straight wire ca...

The field due to a long straight wire carrying a current I is proportional to

A

I

B

`sqrt(I)`

C

`I^2`

D

`1//I`

Text Solution

Verified by Experts

The correct Answer is:
A
`B=(mu_0I)/(2pia)because BpropI`
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Knowledge Check

  • A field due to a long straight wire carrying a current I is proportional to

    A
    l
    B
    `l^(2)`
    C
    `l^(3)`
    D
    `sqrtl`

  • The magnetic induction at any point due to a long straight wire carrying a current is

    A
    Proportional to the distance from the wire
    B
    Inversely proportional to the distance from wire
    C
    Inversely proportional to the square of the distance from the wire
    D
    Does not depend on distance

  • The magnetic field lines due to a straight wire carrying a current are

    A
    straight
    B
    circular
    C
    parabolic
    D
    elliptical

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