Electricity 2 Flashcards
1
Q
What is resistance
A
The ability of a material to oppose the flow of charge
2
Q
What is resistance measured in
A
Ohms
3
Q
What can be used to measure resistance
A
Ohmeter
4
Q
How do you calculate the resistance in a series circuit
A
Rt=R1=R2=R3…
5
Q
What are potential dividers
A
Potential dividers will split a supply voltage across its component resistors
6
Q
What is the ohms Law calculation
A
V = IR
7
Q
What is power
A
The energy transferred per second
8
Q
How to calculate current
A
P = E Or P = IV
—
T
Or p = I 2 R or
P = V2
—-
R
