Question

EXAMPLE 18. A metallic rod of length L is rotated at an
angular speed o normal to a uniform magnetic field B
Derive expressions for the heat dissipation, if the
resistance of the rod is R.
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Answer 1

$\huge \underline \green{\sf{ Answer :- }}$

• A metallic rod of length l is rotated at a constant angular speed ω, normal to a uniform magnetic field B. Derive an expression for the current induced in the rod, if the resistance of the rod is R.

$\small \underline {\sf{ ∴ \ Induced \ current,}}$

$\small \underline {\sf{ I \ = \ eR \ = \ 12Bl2ωR = \ Bl2ω2R}}$.

Answer 2

Answer:

• A metallic rod of length l is rotated at a constant angular speed ω, normal to a uniform magnetic field B. Derive an expression for the current induced in the rod, if the resistance of the rod is R.

\small \underline {\sf{ ∴ \ Induced \ current,}}

∴ Induced current,

\small \underline {\sf{ I \ = \ eR \ = \ 12Bl2ωR = \ Bl2ω2R}}

I = eR = 12Bl2ωR= Bl2ω2R