Understanding Electrical Circuit Components

What is the function of a voltage source in a circuit?

• To measure current flow in a circuit.

• To store electrical energy for later use.

• To act as a resistor in the circuit.

• The function of a voltage source in a circuit is to provide electrical potential difference.

Define a conductor and its role in electrical circuits.

• A conductor is a type of insulator that prevents current flow.

• A conductor is a material that facilitates the flow of electric current in electrical circuits.

• A conductor is a device that stores electrical energy.

• A conductor is a material that only works in high temperatures.

What is a load in an electrical circuit? Give an example.

• A load is a type of wire used to connect components in a circuit.

• A load is a device that generates electrical power, like a generator.

• A load refers to the voltage in a circuit, such as 120 volts.

• A load in an electrical circuit is a component that consumes electrical power, such as a light bulb.

Explain the purpose of a switch in a circuit.

• The purpose of a switch in a circuit is to control the flow of electricity by opening or closing the circuit.

• To convert AC to DC in a circuit.

• To store electrical energy for later use.

• To increase the voltage in a circuit.

What is a resistor and how does it affect current flow?

• A resistor only works in AC circuits and not in DC circuits.

• A resistor has no effect on current flow in a circuit.

• A resistor increases current flow by reducing resistance.

• A resistor limits current flow by providing resistance in a circuit.

Describe the function of a capacitor in a circuit.

• A capacitor acts as a resistor to limit current flow.

• A capacitor generates electrical energy for the circuit.

• A capacitor converts AC to DC voltage.

• A capacitor functions to store and release electrical energy, smooth voltage fluctuations, and filter signals in a circuit.

What role does an inductor play in electrical circuits?

• An inductor stores energy and resists changes in current in electrical circuits.

• An inductor acts as a switch to control current flow.

• An inductor amplifies electrical signals in circuits.

• An inductor converts electrical energy into heat.

How do voltage sources differ from current sources?

• Voltage sources are always AC; current sources are always DC.

• Voltage sources are used in batteries; current sources are used in capacitors.

• Voltage sources can vary current; current sources can vary voltage.

• Voltage sources provide constant voltage; current sources provide constant current.

What happens to the circuit when a switch is opened?

• The circuit continues to operate normally.

• The circuit becomes a short circuit and current increases.

• The circuit emits a loud noise and sparks fly.

• The circuit is broken, and current stops flowing.

Explain the relationship between voltage, current, and resistance in a circuit.

• Resistance increases with higher current only.

• Voltage, current, and resistance are related by Ohm's Law: V = I * R.

• Voltage is independent of resistance.

• Voltage is the same as current.