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Chapter 26: Q. 31 (page 738)

To what potential should you charge a 1.0mFcapacitor to store 1.0Jof energy ?

Short Answer

Expert verified

The required potential is 1.4kV.

Step by step solution

01

Given information 

We have given that 1.0mFcapacitor stores energy 1.0Jof energy.

We need to find the potential.

02

Explanation

The formula for voltage. We're given U(1J),andC(1μF)

U=12CV2→V=2UC

Using the given values in the above formula, we get

localid="1648664182926" V=(2)(1)J1×10-6=1.4V.

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Most popular questions from this chapter

What is the potential difference between yi=-5cm and yf=5cm in the uniform electric field E→=(120,000i^-50,000j^)V/m?

Rank in order, from largest to smallest, the potential differences (∆VC)1to(∆VC)4of the four capacitors in Figure Q26.12. Explain.

The label rubbed off one of the capacitors you are using to build a circuit. To find out its capacitance, you place it in series with a 10μF capacitor and connect them to a 9.0V battery. Using your voltmeter, you measure 6.0V across the unknown capacitor. What is the unknown capacitor's capacitance?

a. Suppose that E→=0→V/mthroughout some region of space. Can you conclude that V=0Vin this region? Explain.

b. Suppose that V=0V throughout some region of space. Can you conclude that E→=0→V/m in this region? Explain.

A 2.0cm-diameter parallel-plate capacitor with a spacing of 0.50mmis charged to 200V. What are

(a) the total energy stored in the electric field and

(b) the energy density?
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