Electrical Circuits Quiz

Which of the following is the unit of electrical resistance?

• Ampere

• Volt

• Ohm

• Watt

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

• To increase current

• To protect the circuit from overload

• To store electrical energy

• To start/stop the flow of current

What is the formula for calculating electrical power?

• Power = Voltage × Current

• Power = Voltage / Resistance

• Power = Current / Resistance

• Power = Resistance × Voltage

What does AC stand for in electrical terms?

• Alternating Current

• Active Current

• Analog Current

• Average Current

Which of the following materials is commonly used as a conductor?

• Rubber

• Plastic

• Copper

• Wood

What device is used to measure electrical current?

• Voltmeter

• Ohmmeter

• Ammeter

• Wattmeter

What is the primary function of a rectifier?

• To convert AC to DC

• To step up or step down voltage

• To store electrical energy

• To measure electrical power

In a series circuit, if one component fails, what happens to the rest of the circuit?

• Nothing changes

• The current increases

• The entire circuit stops working

• The voltage increases

What is the S.I Unit for Length?

• millimetres

• centimetres

• metres

• kilometres

What is the unit of electrical capacitance?

• Henry

• Farad

• Coulomb

• Joule