Q.

A coil of many circular turns of insulated copper wire wrapped closely in the shape of a cylinder is called a ____.


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Detailed Solution

A coil of many circular turns of insulated copper wire wrapped closely in the shape of a cylinder is called a solenoid.
A long tightly wound coil of insulated metallic wire is called a solenoid. The magnetic field generated in the centre and at the core of the solenoid is uniform. Outside the solenoid, the magnetic field strength is far weaker. Thus, a coil of many circular turns of insulated copper wire wrapped closely in the shape of a cylinder is called a solenoid.
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