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1)Two metallic spheres of radii 1cm and 2cm are given charges 10-2 (10 to the power -2 ) and 5*10-2 resp. If they are connected by a wire ,the final charge on the smaller sphere is ? 2)A capacitor is chrged with a battery and energy stored is U .After disconnecting battery another capacitor of capacity is connected in parallel to the first capacitor .Then energy stored in each capacitor is ? 3)Two charges q1 and q2 are placed 30 cm apart ,as shown in the figure .A third charge q3 is moved along the arc of circle of radius 40 cm from C to D .The change in potential energy of the system is q3 k/4pi epsilon not.,where k is ? 4)Three concentric spherical shells have radii a,b and c (a


1)Two metallic spheres of radii 1cm and 2cm are given charges 10-2 (10 to the power -2 ) and 5*10-2 resp. If they are connected by a wire ,the final charge on the smaller sphere is ?


2)A capacitor is chrged with a battery and energy stored is U .After  


disconnecting battery another capacitor of capacity is connected in parallel to the first capacitor .Then energy stored in each capacitor is ?


3)Two charges q1 and q2 are placed 30 cm apart ,as shown in the figure .A third charge q3 is moved along the arc of  circle of radius 40 cm from C to D .The change in potential energy of the system is q3 k/4pi epsilon not.,where k is ?


 


 


 


 


 


 


 


 


 


 


 


 


 


4)Three concentric spherical shells have radii a,b and c (a

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1 Answers

Sher Mohammad IIT Delhi
askIITians Faculty 174 Points
10 years ago
The potential can be calculated using simple formula kq1q2/r, and use superposition principle to find the correct answer.
sher mohammad
faculty askiitians
b.tech, iit delhi

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