Question

Seven resistances are connected between points A and B as shown in adjoining figure. The equivalent resistance between A and B is

• A. 5 \( \Omega \)
• B. 4 \( \Omega \)
• C. 3 \( \Omega \)
• D. 4.5 \( \Omega \)

Hint:

When combining resistors in series, simply add their resistances. For parallel resistors, use the formula \( \frac{1}{R_{\text{eq}}} = \frac{1}{R_1} + \frac{1}{R_2} \).

Answer 1

The Correct Option is C

Step 1: Simplifying the circuit.
The resistors are arranged in series and parallel. Using the series and parallel combination formulas, we can calculate the equivalent resistance between points A and B.

Step 2: Conclusion.
The equivalent resistance between points A and B is 4 \( \Omega \), corresponding to option (3).