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Q.

In the circuit shown in the figure, the hammer strikes the gong when the circuit is completed. Which of the following forces is responsible for the movement of the hammer?


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a

Gravitational force alone

b

Electrostatic force alone

c

Magnetic force alone

d

Frictional force alone 

answer is C.

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Detailed Solution

In the circuit shown in the figure, the hammer strikes the gong when the circuit is completed. The magnetic force alone is responsible for the movement of the hammer.
The gong and the hammer are both attracted to themselves by the magnetic field created when the circuit is complete since they are both metallic objects. Because this is a characteristic of metals, both produce a sound when they strike one another. Consequently, the hammer's movement is caused by the magnetic force.
 
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In the circuit shown in the figure, the hammer strikes the gong when the circuit is completed. Which of the following forces is responsible for the movement of the hammer?