ELECTRONICS

Which of the following is a function of a resistor in a circuit?

• To store energy in the form of a magnetic field

• To allow current to flow in one direction only

• To oppose the flow of current

• To amplify weak signals

What is the unit of capacitance?

• Ohm

• Henry

• Farad

• Joule

Which of the following is used to measure the potential difference across two points in a circuit?

• Ammeter

• Galvanometer

• Voltmeter

• Ohmmeter

The diagram shown is the symbol for which circuit component.

• resistor

• capacitor

• cell

• diode

The diagram shown is the symbol for which circuit component.

• resistor

• capacitor

• cell

• diode

The diagram shown is the symbol for which circuit component.

• inductor

• capacitor

• transistor

• diode

The diagram shown is the symbol for which circuit component.

• lightbulb

• light dependent resistor

• transistor

• light emitting diode

Which of the following components converts electrical energy into light?

• Capacitor

• LED

• Diode

• Resistor

The primary effect of an inductor in a circuit is to:

• Oppose changes in voltage

• Oppose changes in current

• Conduct current in one direction only

• Store charge

A diode conducts current when:

• Reverse-biased

• Forward-biased

• No bias is applied

• Alternating current flows