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The slope of the V-I curve is 45°. Calculate the value of resistance. Assume the relationship between voltage and current is a straight line.

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The slope of the V-I curve is 45°. Calculate the value of resistance. Assume the relationship between voltage and current is a straight line.

(a) 2 Ω

(b) 3 Ω

(c) 4 Ω

(d) 1 Ω

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I need to ask this question from Effect of Starting on Power Supply, Motor and Load in chapter Starting of Electric Drives

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The correct choice is (d) 1 Ω

Easiest explanation: The slope of the V-I curve is resistance. The slope given is 45° so R=tan(45°)=1 Ω. The slope of the I-V curve is reciprocal of resistance.

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