resistance of a copper wire is given by R = R, (1 + a(0-20)] where R,= (4.00 + 0.01)2 is resistance of wire at 0 = 20°C. The value of resistance coefficient of copper i 0-3t1x10-)/°C. It is connected with a battery of emf (10.0 + 0.1) V. e resistance R at 0 = 25°C is (4.08 + 0.02)2 e resistance R at 0 = 50°C is (4.48 ± 0.03)2 e percentage error in calculation of power loss in resistance at 0 = 25°C is 3% e percentage error in calculation of power loss in resistance at 0 = 50°C is 4% Space for Rough Work

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6.
The resistance of a copper wire is given by R = R, (1 + a(0 – 20)] where R, = (4.00 + 0.01)2 is
the resistance of wire at 0 = 20°C. The value of resistance coefficient of copper is
%3D
%3D
(4 x 10-3+ 1 x 10-4)/°C. It is connected with a battery of emf (10.0 + 0.1) V.
(A) The resistance R at 0 = 25°C is (4.08 + 0.02)N
(B) The resistance R at 0 = 50°C is (4.48 ± 0.03)N
(C) The percentage error in calculation of power loss in resistance at 0 = 25°C is 3%
(D) The percentage error in calculation of power loss in resistance at 0 = 50°C is 4%
Space for Rough Work
Transcribed Image Text:option(s) will result in -2 marks. 6. The resistance of a copper wire is given by R = R, (1 + a(0 – 20)] where R, = (4.00 + 0.01)2 is the resistance of wire at 0 = 20°C. The value of resistance coefficient of copper is %3D %3D (4 x 10-3+ 1 x 10-4)/°C. It is connected with a battery of emf (10.0 + 0.1) V. (A) The resistance R at 0 = 25°C is (4.08 + 0.02)N (B) The resistance R at 0 = 50°C is (4.48 ± 0.03)N (C) The percentage error in calculation of power loss in resistance at 0 = 25°C is 3% (D) The percentage error in calculation of power loss in resistance at 0 = 50°C is 4% Space for Rough Work
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