An Air-Filled 20-μF Capacitor Has a Charge of 60 μC

question 6

Multiple Choice

An air-filled 20-μF capacitor has a charge of 60 μC on its plates.How much energy is stored in this capacitor?

• A)70 μJ
• B)80 μJ
• C)90 μJ
• D)100 μJ
• E)110 μJ

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Definitions:

Alternative Hypothesis

A hypothesis that contradicts the null hypothesis, suggesting there is a significant difference or effect.

Null Hypothesis

A statistical hypothesis that assumes no significant difference or effect in a given set of observations, used as a starting point for statistical testing against the alternative hypothesis.

Alternative Hypothesis

A statement that suggests a possible difference or effect, typically to be tested against a null hypothesis in statistical analysis.

Null Hypothesis

In statistics, a hypothesis that posits no effect or no difference, and the assumption that any deviations from this are due to chance.