Units Of Measurement Flashcards
1
Q
Coulombs are the measure of?
A
Charge
2
Q
Joules are the measure of?
A
Energy
3
Q
Ohms are the measure of?
A
Resistance
4
Q
Volts are the measure of?
A
Potential difference
5
Q
Watts are the measure of?
A
Power
6
Q
Amperes are the measure of?
A
Electric current
7
Q
What is the equation for working out power?
Symbol “P” measured in watts, symbol “W”
A
Power = Voltage × Current P = V × I W = V × A
8
Q
What is the equation for working out energy?
Symbol “E” measured in kilowatts per hour, symbol “kWh”
A
Energy = Power × Time E = P × t kWh = kW × h
9
Q
What is the formula for working out voltage?
A
V = I × R OR V = A × Ω
10
Q
What is the formula for working out resistance?
A
R = V ÷ I OR Ω = V ÷ A
11
Q
What is the formula for working out fuse rating?
A
I = P ÷ V OR A = W ÷ V
