Question

The Earth has a magnetic field around it, which is generated by its molten core. This magnetic field exerts a force on compass dials, which are magnets, causing them to align with the Earth's magnetic field.

This force on compass dials is an example of a force that _______.
A.
needs electricity to act.
B.
acts only on contact.
C.
acts through particles in the air.
D.
acts at a distance.

Answer 1

The force on compass dials is an example of a magnetic force, which acts at a distance without the need for direct contact. It operates through the influence of magnetic fields and doesn't require physical touch between the objects involved.

The answer is D