AIPMT MAIN2008Physics-Current Electricity
AIPMT MAIN 2008 Physics Galvanometer MCQ Question
Type: MCQ-numerical-Medium-Class 12
A galvanometer of resistance 50 is connected to a battery of 3 V along with a resistance of 2950 in series. A full scale deflection of 30 divisions is obtained in the galvanometer. In order to reduce this deflection to 20 divisions, the resistance in series should be
A
4450
B
5050
C
5550
D
6050
Correct Answer
Option A
Detailed Explanation
The resistance required for 20 divisions is calculated using the formula , where is the galvanometer resistance, is the series resistance, and are the divisions. Solving gives 4450 .
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