A circular coil of radius $4\, cm$ has $50$ $turns$. In this coil a current of $2\, A$ is flowing. It is placed in a magnetic field of $0.1$ $weber/{m^2}$. The amount of work done in rotating it through $180^\circ $ from its equilibrium position will be........$J$
A circular coil of radius $4\, cm$ has $50$ $turns$. In this coil a current of $2\, A$ is flowing. It is placed in a magnetic field of $0.1$ $weber/{m^2}$. The amount of work done in rotating it through $180^\circ $ from its equilibrium position will be........$J$
- A
$0.1$
- B
$0.2$
- C
$0.4$
- D
$0.8$
Similar Questions
Derive an expression for the force per unit length between two infinitely long straight parallel current carrying wires. Hence, define one ampere $( \mathrm{A} )$.
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Two $10 \; cm$ long, straight wires, each carrying a current of $5 \; A$ are kept parallel to each other. If each wire experienced a force of $10^{-5} \; N$, then separation between the wires is $\dots \; cm$.
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- [JEE MAIN 2022]
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