Fundamentals of Electronics

What is the unit of electric current?

• Watt

• Volt

• Ohm

• Ampere

Define Ohm's Law.

• Ohm's Law: V = I * R, where V is voltage, I is current, and R is resistance.

• Ohm's Law: I = V / R, where I is current, V is voltage, and R is resistance.

• Ohm's Law: V = I + R, where V is voltage, I is current, and R is resistance.

• Ohm's Law: R = V + I, where R is resistance, V is voltage, and I is current.

What is the difference between AC and DC?

• AC reverses direction; DC flows in one direction.

• AC is used in batteries while DC is used in power plants.

• DC can be transmitted over long distances without loss.

• AC is more efficient than DC.

What is a resistor and its function in a circuit?

• A resistor is used to store electrical energy in a circuit.

• A resistor is a component that generates heat in a circuit.

• A resistor is a component that limits current flow in a circuit.

• A resistor is a device that increases voltage in a circuit.

Explain the concept of capacitance.

• Capacitance is the resistance to electric current flow.

• Capacitance is the measure of voltage in a circuit.

• Capacitance is the speed at which electric charge moves.

• Capacitance is the ability to store electric charge, defined as C = Q/V.

What is the purpose of a diode in an electronic circuit?

• To amplify electrical signals in a circuit.

• To store electrical energy for later use.

• To allow current to flow in one direction and block it in the opposite direction.

• To convert alternating current to direct current.

Describe the function of a transistor.

• A transistor functions as an amplifier or a switch for electronic signals.

• A transistor converts electrical energy into light.

• A transistor is used to store data permanently.

• A transistor is a type of battery that powers devices.

What is the role of a capacitor in a power supply?

• The role of a capacitor in a power supply is to smooth voltage fluctuations and provide stable output.

• To convert AC to DC voltage.

• To store energy for long-term use.

• To increase the voltage output of the power supply.

What is the significance of a circuit diagram?

• It provides a list of components needed for a circuit.

• The significance of a circuit diagram lies in its ability to clearly illustrate the layout and function of an electrical circuit.

• It is used to measure the voltage in a circuit.

• It shows the color of the wires used in the circuit.

What are the basic components of a simple electronic circuit?

• Transistor, battery, antenna

• Microcontroller, display, speaker

• Power source, load, connecting wires

• Resistor, capacitor, diode