Explore topic-wise InterviewSolutions in .

This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.

1.

Two small equal spheres carrying unlike and unequal charges are placed 8 cm apart and attack each othwer with a force of `4xx10^(-5)`N. After they have been connected for a moment by a thin conducting wire, they repel each other with a force of `2xx10^(-5)`N. Calculate their original charges.

Answer» Correct Answer - `10.3xx10^(-9)C,2.76 xx 10^(-9)C`
Discussion
2.

Three small balls, each of mass 10 g , are suspended from a common point by 1-m silk threads . The balls are identically charged and hung at the corners of an equiliteral triangle of 0.1 m. What is the charge on each ball ?

Answer» Correct Answer - `6 xx 10^(-8)` C
Discussion
3.

A charge Q is placed at each of the two opposite corners of a square of side a.A charge is placed at each of the other two corners. (a) if the reultant electrical force system of charges? What is the signification of its negative potential energy?

Answer» Correct Answer - `Q=-2sqrt2q,1/(4piepsi_0)*(-7q^2)/(sqrt2Q)` they form a stable system
Discussion