Two Parallel Circular Plates with Radius 7

question 26

Multiple Choice

Two parallel circular plates with radius 7.0 mm carrying equal-magnitude surface charge densities of ±3.0 μC/m² are separated by a distance of 1.0 mm.How much stored energy do the plates have?

• A)78 nJ
• B)25 nJ
• C)7.9 nJ
• D)250 nJ

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Definitions:

Passive Voice

A sentence construction where the subject of the sentence is acted upon by the verb, often hiding the action's performer.

Goodwill Conclusion

The final part of a communication that expresses friendly intent and seeks to maintain a positive relationship with the audience.

Summary Conclusion

A final section of a document that succinctly summarizes the main points or findings.

Active Voice

A sentence construction where the subject performs the action expressed by the verb, making the writing clear and direct.