Electric Circuits Basics

What is the unit of electric current?

• Volt

• Ampere

• Ohm

• Watt

Which component is used to store electrical energy in a circuit?

• Resistor

• Capacitor

• Inductor

• Diode

What is the formula for Ohm's Law?

Which of the following is a conductor of electricity?

• Rubber

• Glass

• Copper

• Wood

What is the symbol for a resistor in a circuit diagram?

• A zigzag line

• A straight line

• A circle

• A triangle

What does a diode do in a circuit?

• Stores energy

• Allows current to flow in one direction only

• Resists the flow of current

• Converts AC to DC

What is the unit of electrical resistance?

• Volt

• Ampere

• Ohm

• Watt

Which of the following is an insulator?

• Silver

• Aluminum

• Plastic

• Iron

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

• To store energy

• To increase current

• To protect the circuit by breaking the connection if the current is too high

• To convert AC to DC

What is the relationship between power (P), voltage (V), and current (I)?