Question : A light bulb working on an 18V battery draws a current of 3A. What will be the resistance of the bulb?
Option 1: 6Ω
Option 2: 2Ω
Option 3: 4Ω
Option 4: 3Ω
Correct Answer: 6Ω
Solution : The correct answer is 6Ω.
Given: Voltage = 18V
Current, I = 3A
V = IR
R = V/I = 18/3
= 6Ω
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