Three equally harged objects are located as shown in the figure
the electric force exerted by the object A on B is `3.0 xx 10^-6N`. What electric force C exert upon B?

Three equally charged objects are located as shown in the figure the electric force exerted by the object A on B is 3.0 xx 10^-6N . What is the net electric force on B?

Three small charged spheres, with equal charges on them are placed as shown in the figure A and C are fixed in position and B can move C exerts a force of 4xx10^-6 N on B . What force A exerts on B?

Three small charged spheres, with equal charges on them are placed as shown in the figure A and C are fixed in position and B can move C exerts a force of 4xx10^-6 N on B. What is the net force on B?

A circular branching made from a uniform conductor is connected to a battery as shown in the figure. What force will the magnetic field of the currents in the branching exert on the agnetic pole placed at its centre O? Deduce the resutl qualtatively.

An electron moves in a circle of radius 0.15 m with a constant speed of 3.6 xx 10^6 ms^-1 . What electric current does this correspond to?

Calculate the magnitude of the electrostatic force exerted by the proton on the electron in the hydrogen atom and compare it with the weight of the electron. Given that mass of electron is 9.1 xx 10^-31 kg, charge on electron is 1.6 xx 10^-19 C and radius of hydrogen atom is 0.53 overset(@)A .

A telescope has objective lens of focal length 15m. If this telescope is used to view the moon, what is the diameter of the image of the moon formed by the objective lens? The diameter of the moon is 3.48 xx 10^6m , and the radius of lunar orbit is 3.8 xx 10^8m .

In the electric field show in the figure the electric field lines on the left have twice the separation as that between those on the right. If the magnitudes of the fields at point A is 40NC^(-1), calculate the force experienced by a proton placed at point A . Also find the magnitude of electric field at the point B.

Two equally charged identical metal spheres A and b repel each other with a fore 2.0 xx 10^-5 N . Another identical uncharged sphere C is touched to A and the nplaced at the md point between A and B. What is the net electric force on C?