Welcome To Www.ExamWeapon.Com

Click On Our Answer Page Below And Enter The Pin: "PIN 5555" Home JAMB WAEC NECO NABTEB NEWS

# Basic Electricity neco past questions and answers

## Basic Electricity neco past questions and answers

What is the formula to calculate electric charge?

A) Q = V/I
B) Q = CV
C) Q = I/R
D) Q = It
What property of a material determines its opposition to the flow of electric current?

A) Conductance
B) Capacitance
C) Resistance
D) Impedance
Which type of circuit has only one path for current flow?

A) Series circuit
B) Parallel circuit
C) Complex circuit
D) Combination circuit
What is the unit of electrical capacitance?

A) Ohm
C) Henry
D) Ampere
What happens when two positively charged objects are brought close to each other?

A) They repel each other
B) They attract each other
C) No effect
D) They lose charge
Answer: A) They repel each other
What law describes the relationship between the voltage across a conductor and the current through it?

A) Ohm's Law
B) Kirchhoff's Law
C) Coulomb's Law
D) Ampere's Law
Which device is used to store electrical energy in a circuit?

A) Capacitor
B) Inductor
C) Resistor
D) Transformer
What is the SI unit of frequency?

A) Hertz
B) Watt
C) Joule
D) Newton
Which type of current is commonly used in household electrical systems?

A) Direct Current (DC)
B) Alternating Current (AC)
C) Static Electricity
D) Magnetic Current
What is the purpose of a ground wire in an electrical system?

A) To carry current to appliances
B) To protect against electrical shock
C) To increase resistance
D) To store electrical charge
Answer: B) To protect against electrical shock
What is the function of an inductor in an electrical circuit?

A) To store charge
B) To regulate voltage
C) To oppose changes in current flow
D) To conduct electricity
Answer: C) To oppose changes in current flow
Which instrument is used to measure electrical potential difference?

A) Ammeter
B) Voltmeter
C) Ohmmeter
D) Galvanometer
What happens to the brightness of a bulb if the voltage across it decreases?

A) Increases
B) Decreases
C) Remains the same
D) Becomes zero
What is the unit of electrical power?

A) Ampere
B) Ohm
C) Volt
D) Watt
Which law states that the induced electromotive force in a circuit is directly proportional to the rate of change of current?

A) Kirchhoff's Law
B) Lenz's Law
D) Ampere's Law
What is the role of a resistor in an electrical circuit?

A) To store charge
B) To increase current flow
C) To limit current flow
D) To regulate voltage
Answer: C) To limit current flow
What is the primary function of an electrical conductor?

A) To prevent current flow
B) To store electrical energy
C) To carry electrical current
D) To oppose current flow
Answer: C) To carry electrical current
Which component is used to change the direction of current flow periodically in a circuit?

A) Capacitor
B) Resistor
C) Diode
D) Alternator
What property of a material makes it a good insulator?

A) High resistance
B) Low resistance
C) High conductivity
D) Low capacitance