1. Consider an infinite plate with charge density = 693 µC/m 2 . What is the mag

Question

1. Consider an infinite plate with charge density = 693 µC/m2. What is the magnitude of the electric field above the plate?

2. Consider a solid sphere centered on the origin with radius R = 4.4 cm and charge density = 9.62×10-5 C/cm3. What is the magnitude of the electric field 9.7 cm from the center?

3. Consider a charged rod of length L = 32.3 cm, oriented along the z-axis and centered on the origin, as shown. Point p is located at r = 41.4 cm, and the electric field magnitude at point p is |E| = 8.43×104 N/C. If the electric field at p points toward the rod, calculate the linear charge density, , of the rod.

Explanation / Answer

1) for a infinite plate

the electric field above the plate is given as

E = /(2*epsilon_0)

E = 693 *10^-6/(2 * 8.854 *10^-12)

E = 3.91 * 10^7 N/C

the electric field is 3.91 * 10^7 N/C

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