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Capacitors

Test Your Knowledge

To calculate your current grade in this subject area, give yourself a confidence score for how well you think you would answer each of the questions below in an exam situation.

These are not the type of questions you would typically find in a physics exam. They are designed to remind you which topics you need to revise.

For scoring, 4= Very confident, 0= No Idea. If a question is not on your syllabus, click N/A and you will not be graded on it.

Can you...

...define capacitance?

4 3 2 1 0 N/A

...describe how you would make a capacitor with a large capacitance?

4 3 2 1 0 N/A

...explain the process of charging a capacitor in terms of movement of electrons?

4 3 2 1 0 N/A

...explain the similarity between charging a capacitor and stretching a spring?

4 3 2 1 0 N/A

...describe an experiment to monitor capacitor discharge?

4 3 2 1 0 N/A

...explain why capacitor discharge is similar to radioactive decay?

4 3 2 1 0 N/A

...explain the physical significance of the time constant?

4 3 2 1 0 N/A

...explain why the time constant is equal to the resisitance times the capacitance?

4 3 2 1 0 N/A

...state the rough value of 1/e?

4 3 2 1 0 N/A

...define exponential decay?

4 3 2 1 0 N/A

...state the rules for combining capacitors in series and parallel?

4 3 2 1 0 N/A

...derive the rulles for combining capacitors in series and parallel?

4 3 2 1 0 N/A

...define dielectric?

4 3 2 1 0 N/A

...describe how a dielectric effects capacitance?

4 3 2 1 0 N/A

...explain why a dielectric effects capacitance?

4 3 2 1 0 N/A

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