Understanding Electrical Technology Concepts

What is the SI unit of electric current?

• Volt

• Ampere

• Ohm

• Watt

Which material is commonly used as a conductor in household wiring?

• Copper

• Rubber

• Glass

• Wood

What is the formula for Ohm’s Law?

• <katex latex="V = I \times R"></katex>

• <katex latex="P = V \times I"></katex>

• <katex latex="R = \frac{V}{P}"></katex>

• <katex latex="I = V + R"></katex>

Which device is used to measure electric current?

• Voltmeter

• Ammeter

• Ohmmeter

• Thermometer

What is the typical voltage of a standard UK mains electricity supply?

• 110 V

• 230 V

• 400 V

• 12 V

Which of the following is an insulator?

• Aluminium

• Silver

• Plastic

• Iron

What does AC stand for in electrical technology?

• Alternating Current

• Active Circuit

• Average Current

• Amplified Charge

Which component stores electrical energy in an electric field?

• Resistor

• Capacitor

• Inductor

• Diode

Which of the following is NOT a renewable source of energy?

• Solar

• Wind

• Coal

• Hydroelectric