Electric Current and Circuits

Resistance in a circuit is equal to voltage divided by ____________.

• joules

• current

• power

• watts

• time

A potential difference of 24 V is applied to a 150 resistor. How much current flows through the resistor?

• 0.15 A

• 3600 A

• 6.25 A

• 0.16 A

This is an example of a _______ circuit

• open

• series

• parallel

• square

What is the current in a circuit with 6.0 Ω of resistance and a battery providing 24 V?

• 1/4 A

• 144 A

• 4 A

• 0.4 A

Look at the circuits in the diagram. In which circuit will the bulb be brighter?

• Circuit A

• Circuit B

• Both circuits, the bulbs will have the same brightness.

A 200-W light bulb is connected across a 100-V dc power supply. What current will flow through this bulb?

• 0.90 A

• 0.36 A

• 0.60 A

• 2.0 A

What is the total current in this circuit?

• 30 A

• 60 A

• 2 A

• 0.5 A

What will happen if one light bulb is removed from this circuit?

• The other bulbs will go out.
• The other bulbs will stay on
• The other bulbs will get dimmer.
• The battery will become stronger.

What type of circuit is used in your house?

• Tandem Circuits

• Four-Phase Circuits

• Series Circuits

• Parallel Circuits