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Electromagnetic Induction — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysicsElectromagnetic Induction3 Marks
Question
The current generator $I_g$ 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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