Understanding Electrical Concepts Quiz

What is the unit of electrical resistance?

• Ampere

• Ohm

• Volt

• Watt

Which of the following is a conductor of electricity?

• Rubber

• Glass

• Copper

• Wood

What is the formula for calculating electrical power?

Which of the following is a unit of electric charge?

• Joule

• Coulomb

• Newton

• Pascal

• 5 V

• 10 V

• 15 V

• 20 V

Which of the following materials is commonly used as an insulator in electrical circuits?

• Aluminium

• Silver

• Plastic

• Iron

What is the frequency of the mains electricity supply in Great Britain?

• 50 Hz

• 60 Hz

• 100 Hz

• 120 Hz

Which of the following is a renewable source of energy?

• Coal

• Natural Gas

• Solar

• Nuclear

What is the symbol for an ammeter in a circuit diagram?

• A circle with a 'V' inside

• A circle with an 'A' inside

• A circle with an 'R' inside

• A circle with a 'W' inside

If a circuit has a voltage of 12 V and a current of 3 A, what is the power consumed by the circuit?

• 24 W

• 36 W

• 48 W

• 60 W