As shown in the Figure, the charges qa, qb, qc, and qd are at the corners of a s

Question

As shown in the Figure, the charges qa, qb, qc, and qd are at the corners of a square of side s = 4.0 cm. We are given that qa = qb = -13muC and qc = qd = +13muC. Find the magnitude of the electric field, in N/C, due to charge qa at the location of q at the center of the square. Find the direction of the electric field, in degrees, due to charge qa at the location of q at the center of the square. Take the x axis to be parallel to the side joining qc to q0. Find the magnitude of the electric field, in N/C, due to all 4 charges at the location of q at the center of the square. Find the direction of the electric field, in degrees, due to all 4 charges qa at the location of q at the center of the square. Find in volts the electrical potential due to all 4 charges at the location of q at the center of the square.

Explanation / Answer

A) Electric field at point q = kQa/r2

= 1.4625 * 108 N/C

B)The electric field would be directed towards negative charge

so E field will be directed at 135 deg from x axis

C) Electric field due to all 4 will be 4.14 * 10 8 N/C

D) It will be pointing towards the positive y axis

E) V centre = -kQa/r - kQb/r + kQc/r + kQd/r = 0

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