When the soft iron core is suddenly removed from an energised solenoid while keeping…

PHYSICS · Single correct · CBSE · Physics · Magnetic Effects of Electric Current · Magnetic Effects of Electric Current

Problem

When the soft iron core is suddenly removed from an energised solenoid while keeping the current unchanged, what happens to the magnetic field inside the coil? (a) It increases sharply. (b) It decreases sharply. (c) It remains exactly the same. (d) It becomes practically zero.

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