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AP EAMCET202022 Sep 2020Morning ShiftPhysicsElectromagnetic InductionActual

Consider the situation shown in the figure. The wire A B is sliding on the fixed rails with a constant velocity. If the wire A B is replaced by semicircular wire, the magnitude of the induced current will

Options

  1. Aincrease
  2. Bremain the same
  3. Cdecrease
  4. Dincrease or decrease depending whether the semicircle bulges towards the resistance or away from it

Correct answer

B. remain the same

Step-by-step solution

Magnitude of induced current in the wire A B is given as I= B v l R Here, aligned & =90^ & I= B v l R aligned When wire A B is replaced by semicircular wire, then neither l nor are changed. B, v and R are already constant. Hence, induced current will remains same.

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