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AP EAMCET20225 Jul 2022Evening ShiftPhysicsElectromagnetic InductionActual

A metal loop of area 10 ~cm ^2 is placed in a region such that its area vector points along k . The region contains a uniform magnetic field of magnitude 1.73 ~T that points in the direction i + j + k . When the magnetic field is switched off, the field decreases to zero at a steady rate in 10 ~s , then the magnitude of emf induced in the loop is

Options

  1. A0.10 mV
  2. B0.17 mV
  3. C1 mV
  4. D1.7 mV

Correct answer

A. 0.10 mV

Step-by-step solution

We have e =- t e = - ( _ f - _ i ) t = _ i - _ f t = 1.73 ( i + j + k 3 ) (10 10⁻⁴ ) k -0 10 = 1.73 3 10⁻³ 10 =10⁻⁴ volt =0.1 mV

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