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A coil ABCD mounted on an axle is placed between the poles N and S of a permanent magnet as shown in Fig. (a) In which direction will the coil begin to rotate when current is passed through the coil in direction ABCD by connecting a battery at the ends A and D of the coil? (b) Why is a commutator necessary for continuous rotation of the coil? (c) Complete the diagram with commutator, ets. For the flow of current in the coil? |
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Answer» A coil ABCD mounted on an axle is placed between the poles N and S of a permanent magnet as shown in Fig.
(a) In which direction will the coil begin to rotate when current is passed through the coil in direction ABCD by connecting a battery at the ends A and D of the coil? (b) Why is a commutator necessary for continuous rotation of the coil? (c) Complete the diagram with commutator, ets. For the flow of current in the coil? |
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