Exams › SSC CGL (Prelims) › General

Two resistors, one with a resistance of 2 ohms and the other with a resistance of 4 ohms, are connected in parallel to a 6-volt battery. What is the total current flowing through the circuit?

1. 1 Ampere
2. 2 Amperes
3. 3 Amperes
4. 4.5 Amperes

Correct answer: 4.5 Amperes

Solution

For resistors in parallel, the equivalent resistance is \(R = \frac{R_1R_2}{R_1+R_2} = \frac{2\times4}{2+4} = \frac{8}{6} = \frac{4}{3}\,\Omega\). Using Ohm’s law, total current \(I = \frac{V}{R} = \frac{6}{4/3} = 4.5\,A\).

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