Electricity and Magnetism

Front

What is the difference between alternating current (AC) and direct current (DC)?

Back

The main difference is the direction of charge flow. AC changes direction periodically, while DC flows in one direction.

Front

What happens when two positive charges are near each other?

Back

They will repel each other.

Front

What is a large discharge of electricity from the sky due to a build-up of electrons called?

Back

Lightning.

Front

What type of circuit allows current to flow without interruption?

Back

Closed circuit.

Front

What do we call materials that are poor conductors of electricity?

Back

Insulators.

Front

What is static electricity?

Back

Static electricity is the build-up of electric charge on the surface of objects.

Front

What is the unit of electric current?

Back

Ampere (A).

Front

What is Ohm's Law?

Back

Ohm's Law states that the current through a conductor between two points is directly proportional to the voltage across the two points.

Front

What is a series circuit?

Back

A series circuit is a circuit in which the components are connected end-to-end, so that the current flows through each component in turn.

Front

What is a parallel circuit?

Back

A parallel circuit is a circuit in which the components are connected across common points or junctions, providing multiple paths for the current.