Student Login

Home›Chapters›Current Electricity PYQs›Kirchhoff's Laws & Measuring Instruments›Question 73

MHT CET 2024 (2 May, Shift 1) · Kirchhoff's Laws & Measuring Instruments

Kirchhoff's Laws & Measuring Instruments question from MHT CET 2024 (2 May, Shift 1)

Q73MHT CET 2024 · 2 MAY · SHIFT 1Difficult

Kirchhoff's Laws & Measuring Instruments

A galvanometer of resistance ' $G$ ' is shunted by resistance of 'S' ohm. To keep the main current in the circuit unchanged the resistance to be put in series with Galvanometer is

Show answer and solution

Answer: (a)

Shunted galvanometer: $\frac{GS}{G + S}$ ; it must still offer resistance G to keep the main current unchanged.
$r + \frac{GS}{G + S} = G$
$r = G - \frac{GS}{G + S} = \frac{G^2}{G + S}$
So the answer is (a).

Report a mistake

More questions on Kirchhoff's Laws & Measuring Instruments

In the experiment to determine the galvanometer resistance by half-deflection method, the…JEE Main 2024 (5 Apr, Shift 1)
Five current carrying conductors meet at point P. What is the magnitude and direction of…MHT CET 2023 (14 May, Shift 1)
Five current carrying conductors meet at a point ' O ' as shown in figure. The magnitude…MHT CET 2023 (9 May, Shift 2)
Only 4% of the total current in the circuit passes through a galvanometer. If the…MHT CET 2023 (13 May, Shift 2)
A galvanometer has resistance ' G ' and range ' Vg '. How much resistance is required to…MHT CET 2023 (10 May, Shift 2)
If only 1% of total current is passed through a galvanometer of resistance ' G ' then the…MHT CET 2023 (10 May, Shift 1)
A galvanometer of resistance G is shunted with a resistance of 10% of G. The part of the…MHT CET 2023 (9 May, Shift 1)
The magnitude and direction of the current in the following circuit is:-NEET 2023