Gm to all the Geniuses ovr here. ...plzz help me solve these problems......qs no.1 and no.4
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Heya!!
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1. Let R of first wire be R1 and R of second wire be R2.
Since Heat energy = V^2 /R
HE in first wire = V^2 /R1 = H1
HE in second wire = V^2 /R2 = H2
=) H1/ H2 = R2/R1
=) H1/H2 = p. L/A2/ p. L/A1
=) H1/H2 = A1/A2
=) H1/H2 = 1/4
(R = p. Length/Area)
(A = Area nd A1/A2 = 1/4 given)
4. Since Energy = I^2 Rt
=) E = 5*5 * 44 *( 5 * 60)
=) E = 25 * 44 * 5 * 60
=) E = 330000 J
=) E = 3.3 * 10^5 J
Hope it helps uh :)
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1. Let R of first wire be R1 and R of second wire be R2.
Since Heat energy = V^2 /R
HE in first wire = V^2 /R1 = H1
HE in second wire = V^2 /R2 = H2
=) H1/ H2 = R2/R1
=) H1/H2 = p. L/A2/ p. L/A1
=) H1/H2 = A1/A2
=) H1/H2 = 1/4
(R = p. Length/Area)
(A = Area nd A1/A2 = 1/4 given)
4. Since Energy = I^2 Rt
=) E = 5*5 * 44 *( 5 * 60)
=) E = 25 * 44 * 5 * 60
=) E = 330000 J
=) E = 3.3 * 10^5 J
Hope it helps uh :)
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