A charge of 15 C15C passes through a circuit every 12 s12s. If the circuit can generate 14 W14W of power, what is the circuit's resistance?

1 Answer
Mar 20, 2016

R=8,96 " Ohm"R=8,96 Ohm

Explanation:

"first ; we must find the electric current:"first ; we must find the electric current:
"I=Electric current"I=Electric current
Delta Q":charge"
Delta "t:time"
I=(Delta Q)/(Delta t)
I=15/12=5/4" A"
P:Power
"R:Resistance of circuit"
"The Electric power is given as formula:"
P=I^2*R
14=(5/4)^2*R
14=25/16*R
R=(14*16)/25
R=8,96 " Ohm"