A spring is suspended as shown in diagram. A battery and switch are connected between the ends of the spring. What happens when the switch is closed ? Guess the answer .

What happens when a metal spring dissolves in an acid?

What happens to the free electrons when the conductor are connected to the battery ?

Observe the diagram and answer the given question. What happens to the lnk mark on the chalk when put into water?

One plate of a parallel plate capacitor is connected to a spring as shown in the figure. The area of each plate of the capacitor is A when the battery is not connected and the spring is unstreteched. After connecting the battery, in the steady state the distance between the plates is 0.75 d , then the force constant of the spring is