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A light bulb working on a 18 V battery draws a current of 3 A. What will be the resistance of the bulb?

This questions was previously asked in

SSC CGL Tier II Paper 1 (02.03.2023)

6 Ω

2 Ω

4 Ω

3 Ω

- Ohm's Law: The relationship between voltage (V), current (I), and resistance (R) is given by Ohm's Law: \( V = I \times R \).

- Given Values: Voltage (V) = 18 V, Current (I) = 3 A.

- Resistance Calculation:

R = \frac{V}{I} = \frac{18 \, \text{V}}{3 \, \text{A}} = 6 \, \Omega

- Option 1: 6 O. This is correct based on the calculation.

- Option 2: 2 O. Incorrect based on calculation.

- Option 3: 4 O. Incorrect based on calculation.

- Option 4: 3 O. Incorrect based on calculation.

- Option 1 is the correct answer because the resistance calculated using Ohm's Law is 6 O.