Electricity and Circuits Quiz

What is electric current?

• Flow of electric charge through a conductor

• Movement of water through a pipe

• Passage of light through a lens

• Flow of air through a room

Explain the concept of series circuits.

• In a series circuit, the components are not connected, so the current has no path to follow.

• In a series circuit, the components are connected randomly, so the current can follow any path.

• In a series circuit, the components are connected in parallel, so the current has multiple paths to follow.

• In a series circuit, the components are connected end-to-end, so the current has only one path to follow.

Describe the characteristics of parallel circuits.

• The characteristics of parallel circuits include only one path for current to flow and varying voltage across components.

• The characteristics of parallel circuits include alternating current flow and variable voltage.

• The characteristics of parallel circuits include multiple paths for current to flow and constant voltage across all components.

• The characteristics of parallel circuits include high resistance and low current flow.

What is electrical resistance?

• It is measured in ohms

• It is measured in watts

• It is measured in amps

• It is measured in volts

Which is the correct equation that represents Ohm's law?

• V = R / I

• V = I ^ R

• V = I + R

• V = I * R

In a circuit with a resistance of 10 ohms and a current of 2 amps, what is the voltage?

• 15 volts

• 30 volts

• 5 volts

• 20 volts

If two resistors of 4 ohms and 6 ohms are connected in series, what is the total resistance?

• 10 ohms

• 24 ohms

• 15 ohms

• 2 ohms

If two resistors of 8 ohms and 12 ohms are connected in parallel, what is the total resistance?

• 10 ohms

• 6 ohms

• 4.8 ohms

• 20 ohms

A circuit has a voltage of 12V and a current of 3A. What is the resistance in the circuit?

• 2 ohms

• 6 ohms

• 10 ohms

• 4 ohms

Explain how the brightness of bulbs in a series circuit and a parallel circuit differ.

• The brightness of bulbs in a series circuit increases as more bulbs are added, while in a parallel circuit, the brightness decreases.

• The brightness of bulbs in a series circuit and a parallel circuit increases as more bulbs are added.

• The brightness of bulbs in a series circuit decreases as more bulbs are added, while in a parallel circuit, the brightness remains constant.

• The brightness of bulbs in a series circuit and a parallel circuit remains constant regardless of the number of bulbs added.