Q. 21

Expert-verifiedFound in: Page 738

Book edition
4th

Author(s)
Randall D. Knight

Pages
1240 pages

ISBN
9780133942651

Two 3.0-cm-diameter aluminum electrodes are spaced 0.50 mm apart. The electrodes are connected to a 100 V battery.

a. What is the capacitance?

b. What is the magnitude of the charge on each electrode?

(a) The value of the capacitance is.

(b) The magnitude of the charge on each electrode is.

We need to define the capacitance.

The capacitance of this type of parallel plate capacitor is given by

where is the area of the plate andis the distance between the plates. In this case

Where, is the diameter of the plate. This further given as

Using the numerical values and we get

We need to define the magnitude of the charge on each electrode.

On each electrode, the magnitude of the charge is given by

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