A galvanometer of resistance 50 andOmega; is connectedto battery of 3V along with a resistance of 2950 andOmega;in series. A full scale deflection of 30 divisions isobtained in the galvanometer. In order to reducethis deflection to 20 divisions, the resistance inseries should be [2008]a)5050 andOmega;b)5550 andOmega;c)6050 andOmega;d)4450 andOmega;Correct answer is option 'D'. Can you explain this answer?

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A galvanometer of resistance 50 Ω is connectedto battery of 3V along with a resistance of 2950 Ωin series. A full scale deflection of 30 divisions isobtained in the galvanometer. In order to reducethis deflection to 20 divisions, the resistance inseries should be [2008]

a)
5050 Ω
b)
5550 Ω
c)
6050 Ω
d)
4450 Ω

Correct answer is option 'D'. Can you explain this answer?

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A galvanometer of resistance 50 Ω is connectedto battery of 3V a...

Total internal resistance = (50+2950)Ω
= 3000 Ω
Emf of the cell, ε = 3V

Current for full scale deflection of 30
divisions is 1.0 mA.
∴ Current for a deflection of 20 divisions

Let the resistance be x Ω. Then

= 4500 Ω
But the resistance of the galvanometer
is 50Ω
∴ Resistance to be added
= (4500 –50) Ω= 4450 Ω

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A galvanometer of resistance 50 Ω is connectedto battery of 3V a...

Ohms is connected in series with a resistor of resistance 100 Ohms. The combination is connected across a battery of emf 12 V. Calculate the potential difference across the galvanometer.

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A galvanometer of resistance 50 Ω is connectedto battery of 3V along with a resistance of 2950 Ωin series. A full scale deflection of 30 divisions isobtained in the galvanometer. In order to reducethis deflection to 20 divisions, the resistance inseries should be [2008]a)5050 Ωb)5550 Ωc)6050 Ωd)4450 ΩCorrect answer is option 'D'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about A galvanometer of resistance 50 Ω is connectedto battery of 3V along with a resistance of 2950 Ωin series. A full scale deflection of 30 divisions isobtained in the galvanometer. In order to reducethis deflection to 20 divisions, the resistance inseries should be [2008]a)5050 Ωb)5550 Ωc)6050 Ωd)4450 ΩCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A galvanometer of resistance 50 Ω is connectedto battery of 3V along with a resistance of 2950 Ωin series. A full scale deflection of 30 divisions isobtained in the galvanometer. In order to reducethis deflection to 20 divisions, the resistance inseries should be [2008]a)5050 Ωb)5550 Ωc)6050 Ωd)4450 ΩCorrect answer is option 'D'. Can you explain this answer?.

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