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An electric source has an emf of 130 V and a terminal voltage of 110 V. If it supplies a terminal current of 20 A, its internal resistance will be |
2 Ω 1 Ω 0.5 Ω 3 Ω |
1 Ω |
The correct answer is Option (2) → 1 Ω $E = 130,\; V = 110,\; I = 20$ $E = V + Ir$ $130 = 110 + 20r$ $20 = 20r$ $r = 1$ Final Answer: $1\ \Omega$ |
