An AC generator is connected to an electric appliance. In 10 revolutions of the armature, how many times the current in the appliance changes its direction?

5 times

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10 times

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20 times

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40 times

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Solution

The correct option is C 20 times
In an AC generator, the direction of current changes every half revolution and therefore in 10 complete revolutions, the direction of current will change 20 times.

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An AC generator is connected to an electric appliance. In 10 revolutions of the armature, how many times the current in the appliance changes its direction?

The correct option is C 20 times In an AC generator, the direction of current changes every half revolution and therefore in 10 complete revolutions, the direction of current will change 20 times.

The correct option is C 20 times
In an AC generator, the direction of current changes every half revolution and therefore in 10 complete revolutions, the direction of current will change 20 times.