A charge of #1 C# passes through a circuit every #2 s#. If the circuit can generate #1 W# of power, what is the circuit's resistance?

1 Answer
Douglas K.
Nov 25, 2016

#"Resistance " = 4" "Omega#

Explanation:

#(1C)/(2s)(1 " Ampere")/(1C/s) = 0.5 " Amperes"#

#"Power (in Watts)" = ("Current (in Amperes)")^2 xx "Resistance (in Ohms)"#

The abbreviation for, Amperes is A, Watts is W, and Ohms is #Omega#. Substitute the known values:

#1" W" = (0.5" A")^2xx " Resistance"#

#"Resistance " = 4" "Omega#

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