WorksheetsElectrical Questions
Total questions: 20
Worksheet time: 10mins
1. What is the smallest part of any material?
Atom
Molecule
Electron
Proton
What charge do protons have?
Positive
Negative
Neutral
Variable
How many electrons make up 1 coulomb?
6.7 x 10^16
6.7 x 10^17
6.7 x 10^18
6.7 x 10^19
Which of the following is NOT an effect of electric current?
Thermal
Chemical
Magnetic
Optical
What is the unit of power in an electrical circuit?
Volt
Ampere
Ohm
Watt
How is power calculated using voltage and current?
P = V/I
P = VxI
P = V+I
P = V-I
In a parallel circuit, what remains unchanged across all components?
Current
Resistance
Voltage
Power
What happens to the resistance of a conductor if its length is doubled?
It remains the same
It is halved
It is doubled
It is quadrupled
How are ammeters connected in a circuit?
In parallel
In series
In series-parallel
In parallel-series
What destroys a magnetic field?
Increasing temperature
Increasing current
Reducing Voltage
Adding a resistor
What is the unit for magnetic flux?
Tesla
Weber
Coulomb
Ampere
How is flux density calculated?
Flux / Length
Flux / Area
Area / Flux
Flux x Area
What does Fleming’s right hand rule apply to?
Force on a conductor
Direction of current
Generation of EMF
Magnetic flux
What is the formula for the force on a current-carrying conductor?
F = BIL
F = B/I
F = B + I
F = B - I
What is the frequency of a sine wave with a time period of 0.02 seconds?
20Hz
50Hz
25Hz
100Hz
How is work done calculated?
Force / Distance
Force x Distance
Force + Distance
Force - Distance
What type of lever has the fulcrum between the load and effort?
Class 1
Class 2
Class 3
Class 4
What is the efficiency of a motor if it outputs 100 watts and inputs 200 watts?
25%
50%
75%
100%
How many diodes are used in a full wave rectifier?
1
2
3
4
What does an inverter do?
Converts AC to DC
Converts DC to AC
Converts AC to AC
Converts DC to DC
