Two similar circular loops carry equal currents in the same direction. On moving the coils further apart, the electric current will
- increase in both
- decrease in both
- remain unaltered
- increases in one and decreases in the second
The Correct Option is A
Solution and Explanation
Then, according to Lenz's law current will increase in both the coils to increase the linked flux.
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Concepts Used:
Lenz’s law
Lenz’s law states that the induced electromotive force with different polarities induces a current whose magnetic field opposes the change in magnetic flux through the loop in order to ensure that original flux is maintained through the loop when current flows in it.
It depends on the principle of conservation of energy and Newton’s third law. To determine the direction of the induced current is most convenient method . Induced current states that he direction of an induced current is always such as to oppose the change in the circuit or the magnetic field that produces it.
Lenz’s Law Formula
The Lenz’s Law is reflected in the formula of Faraday’s law. Here the negative sign is contributed from Lenz’s law. The expression is –
Where,
