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What is the total power in a circuit with a 30V source and a 10Ω resistor?

Practice Questions

Q1

What is the total power in a circuit with a 30V source and a 10Ω resistor?

90W
60W
30W
3W

Questions & Step-by-Step Solutions

What is the total power in a circuit with a 30V source and a 10Ω resistor?

Step 1: Identify the voltage (V) in the circuit. In this case, V = 30 volts.
Step 2: Identify the resistance (R) in the circuit. Here, R = 10 ohms.
Step 3: Use the power formula P = V^2 / R to calculate the power.
Step 4: Substitute the values into the formula: P = 30^2 / 10.
Step 5: Calculate 30^2, which equals 900.
Step 6: Divide 900 by 10 to find P: 900 / 10 = 90.
Step 7: Conclude that the total power in the circuit is 90 watts.

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