Magnetism
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Science for Fun :: Level 1 , 2 and 3 :: JEE :: Physics
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Magnetism
by Infinity squared Sun Oct 12, 2008 11:29 am
2 long parallel wires of negligible resistance are connected at one end to a resistance R and at de other end are connected 2 a D.C source. the distance b/w de axes of de wires is n = 20 times greater than de cross sectional radius of each wire. at wat value of de resistance is de resultant force of interaction b/w de wires zero?
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Re: Magnetism
by paranormal Mon Oct 27, 2008 9:34 pm
I think only one force acts on each wire, that of repulsion due to the other, because of currents in opposite directions. So, how do you expect it to be zero?
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Re: Magnetism
by Infinity squared Tue Oct 28, 2008 11:10 am
well i thought the same thing
but its an Irodov ques
but its an Irodov ques
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Re: Magnetism
by paranormal Wed Oct 29, 2008 8:17 pm
So you are not going to tell which is the other force?
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Re: Magnetism
by Infinity squared Thu Nov 06, 2008 11:48 am
the other force is electrostatic due 2 instantaneos charge developed....but i m not getting the answer
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