A Parallel-Plate Capacitor Is Attached to a Fixed Voltage Supply

question 87

Multiple Choice

A parallel-plate capacitor is attached to a fixed voltage supply.If the plates are then separated to double the initial value,what happens to the energy stored by the capacitor?

• A)It halves,go figure!
• B)It stays the same since the volume doubles while the electric field halves.
• C)It doubles since the volume between the plates doubles.
• D)It quadruples since both the volume and the field double in this case.

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Definitions:

Marginal Cost

The increase in total cost that arises from producing one additional unit of a product or service.

Average Total Cost

The total cost of production divided by the number of units produced, which includes both fixed and variable costs.

Total Cost

The complete expense incurred in production, combining both fixed and variable costs.

Wage Rates

The standard amount of compensation given to employees for their services per unit of time or piece of work.