Four charges are placed on the circumference of a circle of radius R, 90° apart as shown in the fig. The
electric field strength at the centre of the circle is

Question

Four charges are placed on the circumference of a circle of radius R, 90° apart as shown in the fig. The electric field strength at the centre of the circle is

TestHub · Accepted Answer

Electric field due to +2Q and -Q will cancel out partially. Calculate the net electric field due to the remaining charges. The magnitude of the net electric field is $\frac{1}{4 π ϵ _{0}} \frac{2}{5} \frac{Q}{R ^{2}}$ .

The angle with the -ve x-axis is $tan^{- 1} 2$ . Therefore, option A is correct.

Physics - Elecrostatics Question with Solution | TestHub

Options:

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