Question

Consider a charge $q_1$ on a metallic ball with radius $R_1$ at the center, inside of a concentric conducting shell with total charge $q_2$ of inner radius $R_2$ and outer radius $R_3$. Find the electric field at A, where the distance between O and A is a. 1. $E_A = k \frac{q_1 + q_2}{a^2}$ 2. $E_A = k \frac{q_1 + q_2}{R_3^2}$ 3. $E_A = k \frac{q_1}{a^2}$ 4. $E_A = k \frac{q_1 + q_2}{2a^2}$ 5. $E_A = k \frac{q_1 - q_2}{R_3^2}$ 6. $E_A = k \frac{q_1 - q_2}{2a^2}$ 7. $E_A = k \frac{q_1}{R_3^2}$ 8. $E_A = k \frac{q_1}{a^2}$ 9. $E_A = k \frac{q_1 - q_2}{a^2}$ 10. $E_A = 0$

          Consider a charge $q_1$ on a metallic ball with radius $R_1$ at the center, inside of a concentric conducting shell with total charge $q_2$ of inner radius $R_2$ and outer radius $R_3$.
Find the electric field at A, where the distance between O and A is a.
1. $E_A = k \frac{q_1 + q_2}{a^2}$
2. $E_A = k \frac{q_1 + q_2}{R_3^2}$
3. $E_A = k \frac{q_1}{a^2}$
4. $E_A = k \frac{q_1 + q_2}{2a^2}$
5. $E_A = k \frac{q_1 - q_2}{R_3^2}$
6. $E_A = k \frac{q_1 - q_2}{2a^2}$
7. $E_A = k \frac{q_1}{R_3^2}$
8. $E_A = k \frac{q_1}{a^2}$
9. $E_A = k \frac{q_1 - q_2}{a^2}$
10. $E_A = 0$

consider a charge q1 on a metallic ball with radius r1 at the center inside of a concentric conducting shell with total charge q2 of inner radius r2 and outer radius r3 find the electri 66315

Added by Joanna W.

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