Electrical Engineering Quiz

What is the unit of electrical resistance?

• Volt

• Ohm

• Ampere

• Coulomb

Which of the following is a primary component of a capacitor?

• Semiconductor material

• Two conductive plates separated by an insulator

• Magnetic coil

• A moving armature

Which law relates voltage, current, and resistance?

• Ohm's Law

• Kirchhoff's Voltage Law

• Faraday's Law

• Coulomb's Law

What type of signal does an analog circuit process?

• Binary signals

• Continuous signals

• Digital pulses

• Discrete signals

Which device is used to measure electrical current?

• Voltmeter

• Ohmmeter

• Ammeter

• Oscilloscope

What is the function of a transistor in a circuit?

• Store electrical energy

• Act as a switch or amplifier

• Measure voltage

• Convert AC to DC

What is the purpose of a heat sink in electronics?

• Insulate the circuit

• Store charge

• Dissipate heat

• Amplify signals

What is the frequency of the mains electricity supply in the UK?

• 50 Hz

• 60 Hz

• 100 Hz

• 120 Hz

What is the primary use of an operational amplifier (op-amp)?

• Store energy

• Amplify electrical signals

• Generate AC signals

• Rectify DC signals

What is the characteristic of an NPN transistor?

• Current flows from the emitter to the collector

• Current flows from the collector to the emitter

• It blocks all current flow

• It is only used in AC circuits