WorksheetsLevel 2 electrical revision
Total questions: 25
Worksheet time: 16mins
Valence electrons are the electrons in the
How many electrons are there in a copper atom
The nucleus of an atom is made up of
In electron flow electrons move from
What current will flow when 9 volts is applied to a 3 ohm resistance?
What voltage is needed to cause a current of 15 amps to flow through a resistance of 8 ohms?
What resistance is needed to cause a current of 5 amps to flow when 500 volts is applied?
What is the power of an unknown device if a current of 35 mA flows through the device when it is connected to 3 V?
The meter shown is measuring ....
Voltage
Current
Power
Resistance
To measure continuity of protective conductors we would use a ...
voltmeter
ohmmeter
ampmeter
ohmmeter
What is 3.6 X 104 as a normal number
36000
3600
30000
What is the standard form for 0.00241
2.41 x 10-3
2.14 x 103
0.241 x 10-2
0.0241 x 10-1
1.5 mΩ is the same as
0.000002 F is the same as
Transpose P=I2R to find R
R=P2/I
R=P/I2
R=I/P2
R=P x I2
Which of the following does BS7671 state as basic protection
An enclosure
An RCD
A circuit breaker
The CPC conductor
Which of the following does BS7671 state as part of fault protection
An enclosure
The cables insulation
CPC
The cables outer sheath
What is shown in the image
earthing
Bonding
Grounding
Grouping
A conductive part liable to introduce a potential, generally Earth potential, and not forming part of the electrical installation is known as ...
Exposed conductive part
How would you install conduit on to a wall?
Using saddles
Using cleats
Using clips
Using cable ties
In a 2 way lighting circuit, the conductors that join switches together are known as..
To bend PVC conduit to 45o you will need a
Bending spring
Conduit vice
Cable design. The correction factor Ci =
Ambient temperature
Thermal insulation
Grouping
Fuse
What type of safety sign is shown
What type of sign is shown
Mandatory sign
Prohibition sign
Safe condition
