Electric Circuits Quiz

What happens when the switch in a circuit opens?

• Charged particles are prevented from passing through

• The light bulb becomes brighter

• The battery stops working

• Charged particles are attracted to each other

What is the result of having several light bulbs connected in parallel to a battery?

• Each light bulb has a different voltage

• The light bulbs become dimmer

• The current passing through each light bulb decreases

• The voltage across each light bulb is equal to the battery's voltage

What does Kirchhoff's Law state about electric current in a parallel circuit?

• The current entering a circuit must be greater than the current exiting

• The voltage across a light bulb is always constant

• The total current drawn from the battery is the sum of all the currents drawn by each light bulb

• The voltage across a light bulb determines the current passing through it

What is the purpose of a switch in an electric circuit?

• To increase the voltage

• To generate light

• To decrease the current

• To control the flow of charged particles

How does the voltage across a light bulb affect the current passing through it?

• Voltage has no effect on current

• Increasing voltage increases current

• Increasing voltage decreases current

• Decreasing voltage increases current

What is the relationship between the voltage across a light bulb and the brightness of the light produced?

• Higher voltage results in brighter light

• Voltage has no effect on brightness

• Lower voltage results in brighter light

• Higher voltage results in dimmer light

What does Kirchhoff's Voltage Law state?

• The voltage drops as we travel around a loop

• The voltage across a light bulb is always constant

• The total voltage in a circuit is equal to the battery's voltage

• The voltage increases as we travel around a loop

What happens when both sides of a light bulb are at the same voltage?

• No current passes through the light bulb

• The light bulb produces more light

• The battery stops working

• The light bulb becomes brighter

How is the brightness of the lights in a series connection of the lamps affected if we add one more lamp?

• The brightness remains the same

• The lights become dimmer

• The lights flicker

• The lights become brighter