Physical Quantities Flashcards
0
Q
Define: Potential difference
A
Potential difference = energy / charge
1
Q
Define : Electric charge
A
Charge = current x time
2
Q
Define: Resistance
A
Resistance = Potential difference / current
3
Q
Define: Electrical energy
A
Energy = force x distance
4
Q
Define: Electrical power
A
Power = energy / time
5
Q
What symbol is used for Current?
A
I
6
Q
What is the SI Unit for current?
A
Amps (A)
7
Q
What symbol is used for charge?
A
Q
8
Q
What is the SI Unit for charge?
A
Coulomb (C)
9
Q
What is the SI Unit for Potential difference?
A
Volts (V)
10
Q
What symbol is used for Potential difference?
A
V
11
Q
What symbol is used for resistance?
A
R
12
Q
What is the SI Unit for Resistance?
A
Ohms
13
Q
What is the SI Unit for energy?
A
Joule (J)
14
Q
What is the SI unit for power?
A
Watt (W)
15
Q
P=IV
Means…
A
P = Power in Watts I = current in Amperes V = potential difference in Volts
16
Q
Explain :
E=VQ
A
E = energy transferred in Joules V = potential difference in Volts Q = charge in Coulombs
17
Q
Explain:
Q=It
A
Q = charge in Coulombs I = current in Amperes t = time in seconds
18
Q
Explain:
E = Pt
A
E = energy transferred in Joules P = power in Watts t = time in seconds
