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Simran Bhatia Grade: 11
        Suppose the resistance of the coil in the previous problem is 25 Ω. Assume that the coil moves with uniform velocity during its removal and restoration. Find the thermal energy developed in the coil during (a) its removal, (b) its restoration and (c) its motion.
3 years ago

Answers : (1)

Aditi Chauhan
askIITians Faculty
396 Points
										Sol. R = 25 Ω

(a) e = 50V , T = 0.25 s
I = e/R = 2A, H = i^2 RT
= 4 x 25 x 0.25 = 25 J
(b) e = 50 V, T = 0.25 s
I = e/R = 2A, H = i^2 RT = 25 J
(c) Since energy is a scalar quantity
Net thermal energy developed = 25 J + 25 J = 50 J.
3 years ago
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