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Question: Answered & Verified by Expert
A straight conductor of length $4 \mathrm{~m}$ moves at a speed of $10 \mathrm{~m} / \mathrm{s}$. When the conductor makes on angle of $30^{\circ}$ with the direction of magnetic field of induction of $0.1 \mathrm{~Wb}-\mathrm{m}^2$, then induced emf is
PhysicsElectromagnetic InductionAP EAMCETAP EAMCET 2012
Options:
  • A $8 \mathrm{~V}$
  • B $4 \mathrm{~V}$
  • C $1 \mathrm{~V}$
  • D $2 \mathrm{~V}$
Solution:
2966 Upvotes Verified Answer
The correct answer is: $2 \mathrm{~V}$
Induced emf is given by
$\begin{aligned} e & =B v l \sin \theta \\ & =0.1 \times 10 < 4 \sin 30=2 \mathrm{~V}\end{aligned}$

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