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प्रश्न
What is a solenoid?
विकल्प
Current produced in a coil due to electromagnetic induction
A conductor wound into loops that produces current whenever a compass needle is near it
A magnetic field whose strength or effect through a coil changes
A long coil of wire that produces a magnetic field when current flows through it
MCQ
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उत्तर
A solenoid is a long coil of wire. When current flows through it, the solenoid produces a magnetic field.
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