Questions
Four equal charges Q are placed at the four corners of a square of each side ‘a’ . Work done in removing a charge –Q from its center to infinity is
detailed solution
Correct option is C
Potential at center O of the square Vo=V1+V2+V3+V4=4V=4Q4πε0r=4Q4πε0a/2∵r=a2Work done in shifting (-Q) charge from center to infinityW=−QV∞−VO=QV0 =42Q24πε0a=2Q2πε0a.Talk to our academic expert!
Similar Questions
A source in the form of a metal sphere of diameter 10-3 m emits electrons at a constant rate of 6.25 x 1010 particles per second. If the source is electrically insulated, how long (in s) will it take for its potential to rise by 1.0 volt, assuming that 80% of emitted electrons escape from the surface.
799 666 8865
support@infinitylearn.com
6th Floor, NCC Building, Durgamma Cheruvu Road, Vittal Rao Nagar, HITEC City, Hyderabad, Telangana 500081.
free study material
JEE Mock Tests
JEE study guide
JEE Revision Notes
JEE Important Questions
JEE Sample Papers
JEE Previous Year's Papers
NEET previous year’s papers
NEET important questions
NEET sample papers
NEET revision notes
NEET study guide
NEET mock tests
