Question

A scientist runs an electric current along a wire. A magnetic compass is placed near the wire. The scientist observes that whenever the current is turned on, the compass needle moves. Why does the compass needle move? Question 9 options: The current creates an electric field around the wire The current creates a magnetic field around the wire The current increases the force of gravity on the compass needle. The current adds electric charge to the compass needle.

Answer 1

The magnetic field causes deflection of the needle of a compass . The electric current causes a magnetic field around the wire due to which the compass needle moves.

what is a solenoid?

A solenoid is an electric current-conducting coil of wire. An electromagnet built with a wire helical coil is known as a solenoid.

A magnetic field is created when an electric current is sent through the coil. When an electric current runs through a solenoid. It creates a magnetic field.

To learn more about the solenoid refer to the link ;

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