Electricity and Magnetism

The strength of an electric field depends on the

• amount of charge that produced the field.
• distance from the charge.
• amount of charge on a test charge placed in the field.
• both A and B.

Which statement BEST describes a battery?

• parallel current
• alternating current
• electron pumps
• potential current

Lightning is a type of

• static electricity
• polar electricity
• wet battery electriciy
• dry battery electricity

Lightning rods are attached to tall buildings and houses. They allow a conductive path to the Earth, this is called

• static electricity.
• grounding.
• polar energy.
• inductive charging.

Calculate the voltage if the resistance is 9 ohms and the current is 2 amps?

• 18 volts
• 4.5 volts
• 0.22 volt
• 0.022 amps

Which statement BEST describes electric circuits?

• A path of alternating positive and negative charges.
• A path of protons.
• A path of resistance.
• A conducting path.

Which is NOT TRUE of a series circuit?

• One path.
• Any break will result in all devices going out.
• Any break will result in all devices NOT going out.
• Current is the same throughout the circuit.

Identify the type of circuit.

• Series
• Parallel
• Adjacent
• Perpendicular

Identify the type of circuit.

• Series
• Parallel
• Adjacent
• Perpendicular

Household in the US typically have circuits with _____ volts.

• 20
• 40
• 120
• 240