
Two insulating small spheres are rubbed against each other and placed apart. Calculate the number of electrons transferred from one sphere to another if they attract each other with a force of .

Important Questions on Electric Charges and Fields



( is mid-point of arm )





Three charged particles and with charges and are present on the circumference of a circle of radius The charged particles and centre of the circle formed an equilateral triangle as shown in the figure. The electric field at the point is


Which of the following is a landlocked country?


Two charges of equal magnitudes and at a distance exert a force on each other. If the charges are halved and distance between them is doubled, then the new force acting on each charge is





What will be the direction of the magnetic field at the very bottom point of a horizontal power line, where the current flows from east to west when viewed from the west end?



The flow of _____ is anti–clockwise in the given circuit:



