All GRE Subject Test: Physics Resources
Example Questions
Example Question #1 : Electromagnetics
What is the total resistance of a circuit containing four resistors () hooked up in series.
Possible Answers:
Correct answer:
Explanation:
For a circuit in series, the total resistance is simply given by the sum of each individual resistor:
Example Question #2 : Electromagnetics
What is the total resistance of a circuit consisting of three resistors in a parallel configuration? The resistors have the following resistance:
Possible Answers:
Cannot be determined.
Correct answer:
Explanation:
The total resistance of a circuit in parallel is given by the following equation:
Now, we just plug in the values, and solve for the total resistance by inverting!
Gregory
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All GRE Subject Test: Physics Resources
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