# Why does a compass needle move when it is near a wire with an electric current?

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Every electric current produces magnetism. … This electricity produced an area of magnetism around the wire called a magnetic field. Since the compass needle is also a magnet, the magnetic field around the wire attracted and repelled the ends of the compass magnet and caused it to move.

## Why does the needle of a compass deflect when it is near a wire with current passing through the wire?

The needle of a compass is a tiny magnet, which points in the north-south direction. … When an electric current passes through a wire, it behaves like a magnet. This magnetic effect of the electric current makes the compass needle deflect from the north-south direction.

## What happens to the compass needle after it is connected to an electric circuit?

A: The compass needle moves from magnetic north to a position perpendicular to the wire. … The compass needle moves in response to the electricity because a magnetic field is created in the wire when the circuit is connected.

## When a compass is moved near an electric current the compass needle?

We can conclude from this experiment that an electric current causes a magnetic field around it just like a magnet causes a magnetic field. When you moved the compass near a bar magnet, the needle pointed toward the magnet’s magnetic field and not toward the north.

## What does it mean for a compass needle to deflect?

Filters. The difference, expressed in degrees, between the direction a magnetic compass needle points and true or astronomical north; magnetic declination.

## Why does a magnetic needle deflect?

A compass needle gets deflected when brought near a bar magnet because a magnetic compass can be considered as a pole, and the magnet creates a field. … But if you move the magnet, the flux lines generated will be altered, and the magnetic needle experiences a force and deflects as long as you move the magnet.

## When a compass is near a bar magnet What happens to a compass needle as you move the compass around?

In Experiment 1, when you bring the compass near a strong bar magnet, the needle of the compass points in the direction of the south pole of the bar magnet. When you take the compass away from the bar magnet, it again points north.

## What is the deflection of the compass when it is placed under the wire?

If we Place a straight current carrying wire (the direction of the flow current is from south to north) such that the wire is placed below a compass needle such that the wire is parallel to the compass needle, the north pole of the compass needle deflects towards the east.