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```				   a point charge q is placed at the center of an uncharged conducting shell of inner radius R and outer radius 2R. if the point charge is removed from the centre of the shell, to infinity work done by electric force
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3 years ago

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```										$\small V_{\infty}=0\\ V_{inside}=(-Q/4\pi \epsilonR +Q/4\pi \epsilon2R)=-Q/4\pi \epsilon2R$Because charge appearing on the inner surface will be -Q and since the charge was originally zero so charge on outside =+Q.$\small W=-\Delta V \\=>W=-(V_{\infty}-V_0)=V_{0}$Thanks & RegardsArun KumarIIT DelhiAskiitians Faculty
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2 years ago

Can we tell electric field at a point by knowing potential at that point

@ ANSHUL yes, u can tell electric field of a point by knowing its potential becoz electric field is the negative of potential gradient.. Electric field will create at that time when one...

 Umakant biswal 6 months ago
does electric force act on a moving charge

Yes electric force acts on both moving charges and charges on rest.

yes

 SHANMUKESHWAR 8 months ago

yes

 KARTHIK 8 months ago
sir how to use kirchoff law in case of capacitors plzz explain.... i tired to study it but i had problem in sign.....

The process for solving the capacitive network will be same as that of resistive newtork. The only different will be instead of resistance, we will have to write the impedance of the...

 Vijay Mukati 10 months ago

for using kkirchoff’s law in case of capacitors, the first plate u encounter should be taken as positive plate and the charge on that plate should be taken into the equation.... suppose if...

 chandravardhan singh 10 months ago
Q : Can you tell me whrther the negative charge is the excees of electrons or travelling of electron as we take in the cae of the current. Iam confused between the two. Thanks for the answer

in the current bith cases are there.for passing current it is negative charge particles and it transfer energy to one electron to another electron.

 sai kumar 8 months ago

in the current bith cases are there.for passing current it is negative charge particles and it transfer energy to one electron to another electron.

 sai kumar 8 months ago
what is traveling wave

a wave in which the positions of maximum and minimum amplitude travel through the medium. ….….OR …...In mathematics a periodic travelling wave (or wavetrain) is a periodic function of...

 RAKESH CHINDAM 8 months ago

In mathematics a periodic travelling wave (or wavetrain) is a periodic function of one-dimensional space that moves with constant speed. Consequently it is a special type of spatiotemporal...

 SHANMUKESHWAR 8 months ago

The wave that does move along the string is called traveling wave.

 Gavvala Ganesh 8 months ago
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