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# Basic Electricity waec past questions and answers

## Basic Electricity waec past questions and answers

20 basic electricity questions with options and answers:

What is the unit of electrical resistance?

A) Watt
B) Volt
C) Ampere
D) Ohm
Which material is a good conductor of electricity?

A) Plastic
B) Wood
C) Copper
D) Rubber
What is the SI unit of electric current?

A) Ampere
B) Volt
C) Ohm
D) Joule
Which component stores electrical charge?

A) Resistor
B) Capacitor
C) Inductor
D) Diode
What does AC stand for in electrical terms?

A) Alternating Current
B) Active Current
C) Alternating Charge
D) Amperage Current
What is the formula for calculating electrical power?

A) P = IV
B) P = IR
C) P = V^2 / R
D) P = I^2R
Which law describes the relationship between current, voltage, and resistance in an electrical circuit?

A) Ohm's Law
B) Gauss's Law
C) Newton's Law
D) Coulomb's Law
Which component allows the flow of current in one direction only?

A) Resistor
B) Capacitor
C) Inductor
D) Diode
What is the purpose of a fuse in an electrical circuit?

A) To regulate voltage
B) To store charge
C) To break the circuit when there's an overload
D) To increase current flow
Which device changes high voltage to low voltage and vice versa?

A) Transformer
B) Capacitor
C) Diode
D) Inductor
What type of electricity do batteries produce?

A) Direct Current (DC)
B) Alternating Current (AC)
C) Static Electricity
D) Magnetic Current
What is the unit of electrical potential difference?

A) Ampere
B) Ohm
C) Volt
D) Joule
Which law states that the total current entering a junction is equal to the total current leaving the junction?

A) Kirchhoff's Law
B) Gauss's Law
C) Ohm's Law
What happens to resistance in a conductor if its temperature increases?

A) Increases
B) Decreases
C) Remains the same
D) Becomes zero
Which material is commonly used as an insulator in electrical wires?

A) Copper
B) Silver
C) Aluminum
D) Rubber
Which device measures electric current?

A) Ammeter
B) Voltmeter
C) Ohmmeter
D) Galvanometer
What causes a short circuit in an electrical system?

A) Excessive voltage
B) High resistance
C) Low resistance path
D) Low voltage
What is the function of an insulator in an electrical system?

A) To control current flow
B) To conduct electricity
C) To store charge
D) To prevent current flow
Answer: D) To prevent current flow
What device is used to regulate voltage in an electrical circuit?

A) Capacitor
B) Resistor
C) Inductor
D) Voltage Regulator