Understanding Basic Electrical Components

What is the primary function of a resistor?

• To limit or regulate the flow of electrical current in a circuit.

• To store electrical energy for later use.

• To increase the voltage in a circuit.

• To convert electrical energy into heat.

How does a capacitor store energy?

• A capacitor stores energy as heat generated by resistance.

• A capacitor stores energy in an electric field created by the separation of electric charge on its plates.

• A capacitor stores energy by converting it into magnetic energy.

• A capacitor stores energy in the form of chemical bonds between its plates.

What role do transistors play in electronic circuits?

• Transistors are used to store data permanently.

• Transistors only function as resistors in circuits.

• Transistors are primarily used for mechanical movement.

• Transistors control current flow and amplify signals in electronic circuits.

Draw a simple circuit diagram with a battery and a resistor.

• A circuit diagram with multiple resistors but no battery.

• A circuit diagram with only a battery symbol and no connections.

• A diagram showing a battery connected to a light bulb instead of a resistor.

• A simple circuit diagram with a battery and a resistor consists of a battery symbol (two parallel lines) connected to a resistor symbol (zigzag line), forming a closed loop.

What happens to the current in a circuit when a resistor is added?

• The current increases.

• The current remains the same.

• The current decreases.

• The current fluctuates unpredictably.

Explain the difference between a series and parallel circuit.

• A series circuit has a single path for current, while a parallel circuit has multiple paths.

• In a series circuit, components are connected in a loop, while in a parallel circuit, they are connected in a line.

• A series circuit allows for independent operation of components, while a parallel circuit requires all components to function together.

• A series circuit has multiple paths for current, while a parallel circuit has a single path.

What unit is used to measure resistance?

• Watt

• Ampere

• Volt

• Ohm

How do capacitors affect the timing in circuits?

• Capacitors are used solely for filtering signals and have no timing role.

• Capacitors increase the voltage in a circuit without affecting timing.

• Capacitors only store energy and do not influence timing.

• Capacitors control timing by determining the charge and discharge rates in circuits.

What is the purpose of a transistor in a circuit?

• The purpose of a transistor in a circuit is to act as a switch or amplifier.

• To convert AC to DC voltage.

• To measure current flow in a circuit.

• To store electrical energy in a circuit.

Identify the symbols for a resistor and a capacitor in a circuit diagram.

• Resistor: two parallel lines; Capacitor: zigzag line.

• Resistor: zigzag line; Capacitor: two parallel lines.

• Resistor: straight line; Capacitor: circle with a line.

• Resistor: triangle; Capacitor: square.