A piece of conductor of length 0.4 m is moving in a uniform to the magnetic fiel

Question

A piece of conductor of length 0.4 m is moving in a uniform to the magnetic field of strength 0.5 T. Its velocity is perpendicular to the magnetic field. Its speed is 1.5 m/s. The electromotive force in the conductor is 0.2 V. 0.3 V. 0.75 V Choose two problems from the following three: Find in Fig. 3 on the blackboard, the equivalent capacitance of the network; the charge in each capacitance. Find in Fig. 4 on the blackboard, the equivalent resistance of the network, the current in each resistor. A long air-core solenoid of 450 turns, length 20 cm diameter 1.2 cm carries a current 4.0 A. Find the self-inductance of the solenoid; the magnetic field in the solenoid;

Explanation / Answer

12)l = 0.4 m

B = 0.5 T

v = 1.5 m/s

F = B*l*v = 0.5*0.4*1.5 = 0.3 V

So the answer is b) 0.3 V

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