Three charges are at the corners of an isosceles triangle as shown in the figure

Question

Three charges are at the corners of an isosceles triangle as shown in the figure. The +q1= 5.05 uC and -q1 = 5.05 uC charges form a dipole.

A) Find the magnitude and direction of the net force that the q2 = 8.50 uC charge exerts on the dipole.

Fnet = ?

B) For an axis perpendicular to the line connecting he two charges of the dipole at its midpoint and perpendicular to the plane of the paper, find the magnitude and direction of the torque exerted on the dipole by the q2= 8.50 uC charge.

T = ? N*m

Explanation / Answer

magnitude of forces by two charges of same magnitue and different signs is same and magnitude = 9*10^9*10^-6*5.05*5.05*10^4 / 4 = 57.38*10^7 angel between them = 82.8 Fnet = 75.89 * 10^7 N

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