NEET Physics Self & Mutual Induction MCQ Question
Consider two long co-axial solenoids, S1 and S2, each of length l. If S1 has a radius r1 and number of turns per unit length n1, and S2 has radius r2 and number of turns per unit length n2, what happens when a current I2 flows through S2?
A magnetic flux is set up through S1.
A magnetic field is set up only outside of S2.
No magnetic effect is observed in S1.
Current in S2 does not affect S1.
Correct Answer
Detailed Explanation
When a current I2 is set up through S2, it induces a magnetic flux through S1 as per mutual inductance principles mentioned in the NCERT context.
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