The coercivity of a small magnet where the ferromagnet gets demagnetized is $$3 \times {10^3}\,A{m^{ - 1}}.$$ The current required to be passed in a solenoid of length $$10$$ $$cm$$ and number of turns $$100,$$ so that the magnet gets demagnetized when inside the solenoid, is :
- A$$30$$ $$mA$$
- B$$60$$ $$mA$$
- C$$3$$ $$A$$
- D$$6A$$
✓ Correct answer: C
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