Equations Flashcards
1
Q
Power(w), energy(J) and time(s)
A
Power = energy transferred / time
P=E/T
2
Q
Power(W),work done(J) and time(s)
A
Power(W)=work done(J)/time(s)
P=W/t
3
Q
Efficiency?
A
Efficiency = useful output energy /total input energy
4
Q
Charge flow, current and time
A
Current(A)= charge flow(C) /time(s)
I=Q/t
5
Q
Resistance, potential difference and current
A
Current(A)= p,d(V)/resistance (ohms)
I=V/R
6
Q
Potential difference, current and power
A
P.d(V)=power(W)/current(A)
V=P/I
7
Q
Power resistance and current
A
Power
