State two circumstances when one may get an electric shock from an electric gadget. What preventive measure must be provided with the gadget to avoid it ?

What preventive measure provided in a gadget can protect a person from an electric shock?

State two precautions that you must take when switching on an electric circuit.

State two advantages and two limitations of producing electricity from solar energy.

What are the measures one has to take to prevent from contracting STDs?

when an earthed electric appliance gets shor circuited, then the current from its metal body flows into the

An electric gadget draws a current 200 mA from a battery of 12 V. Find its resistance.

What potential difference must be applied to produce an electric field that can acceleration an electric charge to one length the velocity of light ?

A particle of mass 1g and charge 2 C is released from a point A in a region of space containing electric field. Its speed is measured to be 2 m//s when it passes a point B some distance away from A. Potential difference the two points A and B is

Two metal spheres of same radius R are placed at a very large distance from each other, and they are connected by a coil of inductance L, as it is shown in the figure. One of the spheres is loaded with electric charge. At what time, after closing the switch S. does the charge on this sphere decreases to half ?

A light rod of length l is pivoted at the upper end. Two masses (each m), are attached to the rod, one at the middle and the other at the free end. What horizontal velocity must be imparted to the lower end mass, so that the rod may just take up the horizontal position ?