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The figure shows two infinite parallel s...

The figure shows two infinite parallel sheets of current, with current per unit length `lamda_(1) and lamda_(2)`. If `B_(P), B_(Q) and B_(R)` represent the magnetic field at the points P, Q and R respectively, then

A

`B_(1) gt B_(2) ne 0`

B

`B_(2) gt B_(3) ne 0`

C

`B_(1) = B_(2)= B_(3)= 0`

D

`B_(3) gt B_(4) ne 0`

Text Solution

Verified by Experts

The correct Answer is:
D
`B prop r`, Inside, `B prop (1)/(r)`, Outside
`because B_(1)= B_(2)= 0,B_(3) gt B_(4) ne 0`
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