As shown in the figure, a metal rod makes contact with a partial circuit and completes…
Physics · Class 12 · CBSE — Electromagnetic Induction
As shown in the figure, a metal rod makes contact with a partial circuit and completes the circuit. The circuit area is perpendicular to a magnetic field with \(B = 0.15 \text{ T}\). If the resistance of the total circuit is 3 Ω, the force needed to move the rod as indicated with a constant speed of 2 m s−1 will be equal to
- 3.75 × 10–3 N
- 2.75 × 10–3 N
- 6.57 × 10–4 N
- 4.36 × 10–4 N
Answer
(A) 3.75 × 10 –3 N
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