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 adds electric charge to the compass needle. The current increases the force of gravity on the compass needle.

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Answer:

The correct option is: The current creates a magnetic field around the wire

Explanation:

It is because the current flowing through the circuit creates a magnetic field around the wire.

The reason behind this is the magnetic force due to current. Whenever current flows from any conductor it creates a magnetic field around the conductor this is due to the movement of charges inside the conductor.

What is Magnetic Field?

The magnetic field is the area around a magnetic material or electrical circuit with moving charges which experiences the magnetic force.

The direction of this magnetic field is determined through the right-hand thumb rule. In the right-hand thumb rule when the thumb shows the direction of the current then, the curled fingers show the direction of the magnetic field across the conductor.

The magnetic field produced by the current is solenoid i.e like the spring.

To know more about Magnetic Field

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