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JEE Mains · Physics · STD 12 -6. Electromagnetic induction

The figure shows a square loop \(L\) of side \(5\, cm\) which is connected to a network of resistances. The whole set up is moving towards right with a constant speed of \(1\, cms^{-1}\). At some instant, a part of \(L\) is in a uniform magnetic field of \(1\, T\), perpendicular to the plane of the loop. If the resistance of \(L\) is \(1.7\,\Omega \), the current in the loop at that instant will be close to.....\(\mu A\)

  1. A \(115\)
  2. B \(170\)
  3. C \(60\)
  4. D \(150\)
Verified Solution

Answer & Solution

Correct Answer

(B) \(170\)

Step-by-step Solution

Detailed explanation

since it is a balanced wheatstone bridge, its equivalent resistance \(=\frac{4}{3}\, \Omega\) \(\varepsilon=\mathrm{B} \ell \mathrm{v}=5 \times 10^{-4}\, \mathrm{V}\) So total resistance \(\mathrm{R}=\frac{4}{3}+1.7 \approx 3\, \Omega\)…
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