U5-Quiz1-introduction to electgricity

What happens if a wire is removed from a basic circuit?

• The bulb lights up more

• The bulb goes out

• The current increases

• The battery discharges faster

What instrument is used to measure voltage in a circuit?

• Ammeter

• Thermometer

• Voltmeter

• Barometer

How does voltage affect the brightness of a light bulb?

• It does not affect it at all

• Higher voltage, lower brightness

• Higher voltage, higher brightness

• Lower voltage, higher brightness

What component is added to a circuit to control the flow of current?

• Resistor

• Switch

• Capacitor

• Transformer

What is a key difference between direct current (DC) and alternating current (AC)?

• DC periodically changes direction

• AC remains constant in one direction

• DC is used in batteries

• AC is used only in portable devices

What happens if a resistor is connected in parallel to a light bulb in a circuit?

• The total resistance increases

• The light bulb goes out

• The current is divided between the two

• The light bulb shines brighter

What is the main function of a capacitor in an electrical circuit?

• Protect against overloads

• Measure current

• Convert alternating current to direct current

• Store energy

What effect does a short circuit have on an electrical circuit?

• Reduces the current

• Disconnects the battery

• Can cause an increase in temperature

• Improves efficiency

What device is used to store electric charge in a circuit?

• Switch

• Transformer

• Capacitor

• Resistor

What is the effect of increasing resistance in an electrical circuit?

• Improves efficiency

• Increases current

• Decreases current

• No effect