Which of the following rule is used to find the induced current direction by magnetism?

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With right-hand thumb rule

By using a magnetic needle

Both

none of these

answer is A.

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Detailed Solution

The direction of induced current by magnetism can be known with the help of the right-hand thumb rule.
The right-hand thumb rule can determine the direction of induced electric current in the wire through the magnetic field. This rule states, "if we point our index finger in the direction of positive charge and the middle finger in the direction of the magnetic field then the thumb gives the direction of the magnetic force pushing on the moving charge."
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