#### Question

The diagram below shows part of a circuit:

If this arrangement of three resistors was to be replaced by a single resistor, its resistance should be:

(a) 9 Ω

(b) 4 Ω

(c) 6 Ω

(d) 18 Ω

#### Solution

(a) 9 Î

The two resistors of 6 Î are connected in parallel with each other. So, their net resistance 3 Î is connected in series with a resistance of 6 Î. So, the net resistance of the complete arrangement is 9 Ω.

Is there an error in this question or solution?

Solution The Diagram Below Shows Part of a Circuit: Concept: Resistance of a System of Resistors - Resistors in Series.