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Electromagnetic Induction — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsElectromagnetic Induction3 Marks
Question
The current generator Ig shown in figure, sends a constant current i through the circuit. The wire cd is fixed and ab is made to slide on the smooth, thick rails with a constant velocity v towards right. Each of these wires has resistance r. Find the current through the wire cd.

✓

Answer


Initial current passing = i

Hence initial emf = ir

Emf due to motion of ab = Blv

Net emf = ir - Blv

Net resistance = 2r

Hence current passing $=\frac{\text{ir}-\text{Blv}}{2\text{r}}$

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