come on, that's ohm, not omega. Omega is just the symbol used for the unit.
1A = 1C/s
P = I^2R = (10/5)^2 * 25 = 100 W
energy = power * time
A circuit with a single 25.0 omega resistor runs for 5.00 s. During this time10.0 C pass through a point in the circuit.
a. What is the power rating of this circuit?
b. How much energy is used?
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