IPC - CY2 Electricity and Circuits Review

Front

What is resistance measured in?

Back

Ω (Ohms)

Front

Why is electrical wiring usually covered with a layer of plastic?

Back

To make it safe

Front

A flow of electrons through a conductor is called:

Back

A current

Front

Which diagram shows two bulbs in a series?

Back

Diagram 2

Front

What happens to the current flowing through a circuit as resistance increases?

Back

The current decreases.

Front

What is the unit of electric current?

Back

A (Amperes)

Front

What is the unit of voltage?

Back

V (Volts)

Front

What is the formula for calculating power in an electrical circuit?

Back

P = VI (Power = Voltage x Current)

Front

What is a series circuit?

Back

A circuit where components are connected end-to-end, so the current flows through each component.

Front

What is a parallel circuit?

Back

A circuit where components are connected across common points, allowing multiple paths for current.