Two fixed identical metallic spheres A and B of radius R=50cm each are placed on a non-conducting plane at a very large distance from each other and they are connected by a coil of inductance L=9mH as shown in figure. One of the spheres (say A) is imparted an initial charge and the other is kept uncharged. The switch S is closed at t=0. After what minimum time t does the charge on the first sphere decrease to half of its initial value ?

Two fixed identical metallic spheres A and B of radius R=50cm each are

1.	Two fixed identical metallic spheres A and B of radius R=50cm each are placed on a non-conducting plane at a very large distance from each other and they are connected by a coil of inductance L=9mH as shown in figure. One of the spheres (say A) is imparted an initial charge and the other is kept uncharged. The switch S is closed at t=0. After what minimum time t does the charge on the first sphere decrease to half of its initial value ?
Answer» `pixx10^(-6)sec` `(pi)/(4)xx10^(-6)sec` `(pi)/(2)xx10^(-6)sec` `2pixx10^(-6)sec` SOLUTION :Angular FREQUENCY `omega` of the `LC` OSCILLATION `=sqrt(2pi epsilon_(0)RL)` required time is one forth of the time period

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