What is the unit of electric current?
A Watt
B Volt
C Ampere
D Ohm
What does Ohm’s Law relate?
A Voltage, Current, Resistance
B Voltage, Energy
C Voltage, Power
D Current, Power
What does a resistor do in a circuit?
A Generates power
B Reduces current
C Stores energy
D Increases current
Which of these is a type of electrical energy source?
A Inductor
B Capacitor
C Transformer
D Battery
What is the main purpose of Kirchhoff’s Current Law (KCL)?
A To calculate voltage
B To calculate resistance
C To analyze current flow
D To find power
Which material is a good conductor of electricity?
A Copper
B Glass
C Rubber
D Wood
What does a voltmeter measure?
A Power
B Current
C Voltage
D Resistance
What does an insulator do?
A Generates voltage
B Stores charge
C Conducts electricity
D Blocks electrical flow
What is the main difference between AC and DC?
A AC flows in one direction
B DC flows in one direction
C AC is used in batteries
D DC is used in power plants
What does an inductor do in an electrical circuit?
A Blocks current
B Converts energy to light
C Stores electrical energy
D Reduces resistance
What is the unit of electrical power?
A Watt
B Volt
C Ampere
D Ohm
Which of the following is an example of a semiconductor material?
A Aluminum
B Iron
C Silicon
D Copper
Which of the following is true about electric circuits?
A Voltage remains constant throughout
B Resistance is always zero
C Current is the same at all points
D Current splits at junctions
What is the purpose of a capacitor in a circuit?
A Block current
B Store energy
C Measure voltage
D Conduct current
What is the main purpose of fuses in electrical systems?
A To break the circuit when current is too high
B To store electrical energy
C To reduce voltage
D To increase current