Electricity and Magnetism Review S8P5a,b.c

Front

What is an electric generator?

Back

An electric generator is a device that converts mechanical energy into electrical energy by moving a magnet within a coil of wire.

Front

What happens when a magnet is moved inside a coil of wire?

Back

It induces an electric current in the wire due to electromagnetic induction.

Front

What is the magnetic field?

Back

The magnetic field is the region around a magnet where magnetic forces can be detected.

Front

How does a compass work in relation to a magnet?

Back

A compass aligns itself with the Earth's magnetic field and will point towards the magnetic north, which is influenced by nearby magnets.

Front

What is electric charge?

Back

Electric charge is a property of subatomic particles that causes them to experience a force when placed in an electromagnetic field.

Front

What happens to a neutral object when it comes into contact with a charged object?

Back

The neutral object can become charged by gaining or losing electrons.

Front

What is the principle of conservation of charge?

Back

The total electric charge in an isolated system remains constant; charge can neither be created nor destroyed.

Front

What is gravitational force?

Back

Gravitational force is the attractive force between two masses, which causes objects to be pulled towards each other.

Front

How does gravity affect the trajectory of an asteroid?

Back

Gravity can change the direction and speed of an asteroid as it passes near a massive body like Earth.

Front

What is the difference between velocity and speed?

Back

Velocity is a vector quantity that includes both speed and direction, while speed is a scalar quantity that only measures how fast an object is moving.