What is the primary function of a circuit breaker?
A Increase current
B Measure power
C Prevent overloads
D Control voltage
What does an electrical fuse do?
A Store energy
B Prevent circuit overload
C Increase current
D Measure voltage
What is the purpose of grounding in an electrical system?
A Increase resistance
B Measure current
C Control voltage
D Provide a safe path for current
Which of the following materials is commonly used for electrical wiring?
A Copper
B Rubber
C Wood
D Glass
What is the role of a capacitor in an electrical circuit?
A Increase voltage
B Store energy
C Control current
D Measure resistance
What is the main benefit of energy conservation?
A Reduces energy costs
B Increases resistance
C Increases current flow
D Reduces voltage
What is the unit of electrical energy?
A Watt-hour
B Volt
C Ampere
D Joule
How is energy consumed in a circuit?
A As sound
B As heat
C As light
D All of the above
What is the primary cause of electrical hazards?
A Short circuits
B Low resistance
C Overloaded circuits
D High voltage
What does an ammeter measure in a circuit?
A Power
B Voltage
C Current
D Resistance
What is the primary function of a resistor in a circuit?
A Control current flow
B Increase voltage
C Convert energy to light
D Store energy
What is the unit of resistance?
A Watt
B Volt
C Ohm
D Ampere
What is a short circuit?
A A circuit with too much current
B A path with no resistance
C A faulty switch
D A complete circuit with no current
What does Ohm’s Law describe?
A Relationship between voltage, current, and resistance
B Relationship between voltage and power
C Relationship between current and energy
D Relationship between energy and power
How can electrical energy be conserved?
A Increase voltage
B Use more power
C Use thicker wires
D Use energy-efficient devices