Question

If you are trying to use a magnetic compass to find your way, it is important that you use the compass well away from electric circuits. Why is this important?

1) The electricity from the circuits can arc to the compass, causing electrocution.
2) The magnetic field of the compass can interfere with the current in the wire.
3) The current moving through the circuits causes a local magnetic field.
4) The charges in the compass's needle will flow with current in the wire.

Answer 1

When using a magnetic compass, it is important to keep it away from electric circuits to avoid interference with its magnetic field and ensure accurate readings.

Step-by-step explanation:

When using a magnetic compass to find your way, it is important to use the compass well away from electric circuits because the current moving through the circuits creates a local magnetic field which can interfere with the magnetic field of the compass needle and cause it to deflect. This deflection can lead to inaccurate readings and make it difficult to determine the correct direction.

The interaction between the electric field from the moving charges in the current and the magnetic field of the compass needle is the main reason why the compass can be affected by nearby electric circuits. The magnetic field from the current can cause the needle to deflect, giving incorrect readings.

Therefore, it is important to keep the compass away from electric circuits to ensure accurate navigation and prevent any interference with the compass needle's alignment with the Earth's magnetic field.