Physical Science Electricity Test

Front

Why is copper commonly used for electrical wiring?

Back

Copper is used for electrical wiring because it is an excellent conductor of electricity.

Tags

NGSS.MS-PS2-3

Front

What happens to the bulbs in a series circuit if the wire is cut?

Back

If the wire is cut in a series circuit, all bulbs will go out because the circuit is broken.

Front

What effect does adding more batteries have on a circuit with one light bulb?

Back

Adding more batteries to a circuit with one light bulb will make the bulb brighter.

Front

What does it mean if an electric circuit is closed?

Back

If an electric circuit is closed, it means the switch is ON and electricity can flow.

Front

What is the symbol for a switch in an electrical circuit?

Back

The symbol for a switch is typically represented by a break in the line with a small circle or a lever.

Front

What is the difference between a series circuit and a parallel circuit?

Back

In a series circuit, components are connected end-to-end, so current flows through each component. In a parallel circuit, components are connected across common points, allowing current to flow through multiple paths.

Front

What is electrical resistance and how does it affect current flow?

Back

Electrical resistance is the opposition to the flow of electric current. Higher resistance reduces current flow, while lower resistance allows more current to flow.

Front

What is Ohm's Law?

Back

Ohm's Law states that the current (I) through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R) of the conductor: V = I * R.

Front

What is the role of a fuse in an electrical circuit?

Back

A fuse protects an electrical circuit by breaking the circuit if the current exceeds a certain level, preventing overheating and potential fires.

Tags

NGSS.MS-ETS1-1

Front

What is the function of a circuit breaker?

Back

A circuit breaker automatically interrupts the flow of electricity in a circuit when it detects an overload or short circuit.