Electromagnetism and Electrical Concepts

Front

What is electrical current?

Back

A flow of charged particles.

Front

What is an electric circuit?

Back

An unbroken path of material that carries an electrical current.

Front

What happens when a circuit is complete?

Back

Charged particles are attracted and move along the pathway.

Front

What unit is used to measure electrical current?

Back

Ampere or amp.

Front

What is resistance in an electrical circuit?

Back

A measure of the opposition to the flow of current.

Front

What factors influence resistance?

Back

Material properties, length, cross-sectional area, and temperature.

Front

What is the role of an insulator in a circuit?

Back

It has high resistance, like the plastic coating on a wire.

Front

What is the role of a conductor in a circuit?

Back

It has low resistance, like copper wire.

Front

How is voltage similar to water pressure?

Back

Low pressure is like safe amounts of water; high pressure is like intense amounts of water.

Front

What is Ohm a measure of?

Back

Resistance to the electrons traveling through the circuit.