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Questions and Answers
What is the formula for power in an electrical circuit?
What is the formula for power in an electrical circuit?
- $P = I^2R$ (correct)
- $P = UI$
- $P = \frac{U^2}{R}$
- $P = \frac{U}{I}$
What is the relationship between resistance and conductance?
What is the relationship between resistance and conductance?
- They are inversely proportional (correct)
- There is no relationship between them
- They are directly proportional
- The relationship depends on the material
What is the formula for resistance in terms of resistivity, length, and cross-sectional area?
What is the formula for resistance in terms of resistivity, length, and cross-sectional area?
- $R = \frac{\rho A}{L}$
- $R = \frac{\rho L}{A}$ (correct)
- $R = \frac{A}{\rho L}$
- $R = \frac{L}{A\rho}$
In a series circuit, how are the resistances of individual resistors related?
In a series circuit, how are the resistances of individual resistors related?
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What is the relationship between voltage, current, and resistance in an electrical circuit?
What is the relationship between voltage, current, and resistance in an electrical circuit?
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