CFISD Electrical Circuits

What is the component in a circuit that resists the flow of electric current?

• resistor

• capacitor

• amplifier

• conductor

What is the purpose of a resistor in an electrical circuit?

• Resistors are only necessary in circuits with low voltage.

• The purpose of a resistor in an electrical circuit is to limit the flow of current.

• Resistors are used to store electrical energy in a circuit.

• The purpose of a resistor is to increase the flow of current.

What is the role of a fuse in an electrical circuit?

• The role of a fuse in an electrical circuit is to increase the current flow.

• The role of a fuse in an electrical circuit is to regulate the voltage.

• The role of a fuse in an electrical circuit is to store electrical energy.

• The role of a fuse in an electrical circuit is to protect the circuit from overcurrent by breaking the circuit when the current exceeds a certain level.

What is the flow of electric charge called in a circuit?

• resistance

• voltage

• power

• current

What is the unit of electric current?

• Joule

• Ohm

• Volt

• Ampere (A)

What is the function of a switch in an electrical circuit?

• To open or close the circuit

• To decrease the resistance

• To generate heat

• To increase the voltage

What is the symbol for a battery in a circuit diagram?

• A square with a lightning bolt

• Series of long and short parallel lines

• A circle with a plus sign inside

• A zigzag line

What is the difference between a series circuit and a parallel circuit?

• The main difference between a series circuit and a parallel circuit is how the components are connected and how the current flows through them.

• The color of the wires used

• The temperature at which they operate

• The size of the components

How does the voltage change in a series circuit with multiple bulbs?

• The voltage does not change.

• The voltage decreases with each bulb added.

• The voltage fluctuates randomly.

• The voltage increases with each bulb added.

Which switch or switches must be closed to make the lamps light?

• only switch 1

• only switch 2

• switches 1 and 2