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A metallic rod of length l is hinged at ...

A metallic rod of length `l` is hinged at the point `M` and is rotating about an axis perpendicular to the plane of paper with a constant angular velocity `omega`. A uniform magnetic field of intensity `B` is acting in the region (as shown in the figure) parallel to the plane of paper. The potential difference between the points `M` and `N`

A

is always zero

B

varies between `1/2Bomegal^2` to 0

C

is always `1/2 Bomegal^2`

D

is always `Bomegal^2`

Text Solution

Verified by Experts

The correct Answer is:
A

`B_(||)` is parallel to `MN` (or`I`) and `B_(_|_)` is parallel or antiparallel to velocity.
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DC PANDEY ENGLISH-ELECTROMAGNETIC INDUCTION-Level 1 Objective
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  13. In the circuit shown in figure L=10H, R=5Omega, E=15V. The switch S is...

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  15. A conducting rod of length l falls verticaly under gravity in a region...

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