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Sliding contact of a potentiometer is in the middle of the potentiometer wire having resistance R P = 1 Ω as shown in the figure. An external resistance of R e = 2 Ω is connected via the sliding contact. The electric current in the circuit is :

1. 0.3 A
2. 1.35 A
3. 1.0 A
4. 0.9 A

Correct answer: 1.0 A

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