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A potential difference V is applied across a conductor of length L and diameter D. how the electric field E and resistance R affected when:
(1) V is halved (2) L is halved (3) D is doubled
what are the constituents of phloem ?
why does the temp. remains constant during the melting of ice even thoug heat is supplied contiously?
Estimate the average drift speed of conduction electrons in a copper wire of cross sectional area 1 x 10-7 m2, carrying a current of 1.5 A.Assume that each copper atom contributes roughly one cond...
गंगा गए गंगादास जमुना गए जमुनादास- muhavre ka arth ????
let a1,a2.......... and b1,b2............be the arithmetic progressions such that a1=25 b1=75 and a100+b100=100.find the sum of first 100 terms of the progression(a1+b1),(a2+b2)
Name some resource rich but economically backward regions and some resource poor but economically developed reguions. Give reasons for such a situation.
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