All AP Physics C: Mechanics Resources
Example Questions
Example Question #1 : Circuit Relationships
A simple circuit contains two resistors in parallel, connected to a 20V source. What power is being provided by the source to the circuit?
Possible Answers:
Correct answer:
Explanation:
The power supplied to the circuit can be calculated using the equation:
To use this equation, we need to find the equivalent resistance of the circuit. Use the equation for equivalent resistance in parallel:
Now that we have the resistance and the voltage, we can solve for the power.
All AP Physics C: Mechanics Resources
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