42 - Electric Field and Potential Questions Answers

a small ball of mass m=1 kg and charge 2/3*10^-6 is placed at the center of a uniformly charged sphere of radius 1 m  and charge 1/3 mC. a narrow smooth horizontal groove is made in the sphere from the center to the surface as ahown, the sphere is made to rotate about it vertical diameter at a constant rate of 1/(2 pie) revolutions per second. find the speed with respect to ground with which the ball slides out from the groove .

Asked By: ARYAA SINGH 1 year ago
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a small ball of mass 1kg and a charge 2/3 uC is placed at the center of a uniformly charged sphere of radius 1m and charge 1/3 mC. a narrow smooth horizontal groove is made in the sphere from centre to surface as shown in figure. the sphere is made to rotate about its vertical diameter at a constant rate of 1/2pi revolutions per second. find the spedd w.r.t ground with which the ball slide out from the groove. neglect any magnetic force acting on ball?

Asked By: RATNAM GANGULA 2 year ago
Three identical metal plates are kept parallel to each other. The leftmost plate is given a charge Q and the rightmost plate is given a charge -Q. The middle one remains neutral. Find the charge appearing on the outer surface of the rightmost plate?
Asked By: NEHA GUPTA 4 year ago
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A charge (-e) is placed in vacuum at the point (d, 0, 0), where d > 0. The region x≤ 0 is filled uniformly with a metal. The electric field at the point (d/2, 0, 0) is

Asked By: BEENA BHATT 5 year ago

A Volt-meter of 20000 Ohm resistance is connected with R ohm resistance in series. if we apply 110 V of pd to the mechanism, the Volt meter shows 5 V reading.. so find the R...

Asked By: BONEY HAVELIWALA 6 year ago
Answer Strategies and trick by Manish sir (it will help you to solve it by yourself)

current on both the resistances will be same

so V1/R1 = V2/R2

5/20000 = 105/R

solve

Two particles of masses m and 2m with charges q and 2q are placed in a uniform elecric field E and allowed to move for the same time. The ratio of their kinetic energies will be

a) 2 : 1
b) 1 : 2
c) 4 : 1
d) 1 : 4

Asked By: JINCY JACOB 6 year ago
is this question helpfull: 27 6 read solutions ( 1 ) | submit your answer

a partical of mass m and carrying charge q starts moving around a fixed charge q2 along a circular path of radius r find period of revolution

Asked By: NISHANT KUMAR 6 year ago
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QUE. A charge "q1" is placed at the centre of a spherical conducting shell of radius 'R" .Conducting shell has a total charge of "q2" .Electrostatic potential energy of the system is???

Asked By: SANKET DAS 6 year ago

two identical balls of same charge hanged with athread suspended at an angle theta of same charge.find the mass of identical ball

Asked By: SAI KRISHNA 6 year ago