MHT CET 2023 10th May Evening Shift | Current Electricity Question 18 | Physics

A galvanometer has resistance '$$\mathrm{G}$$' and range '$$\mathrm{V} g$$'. How much resistance is required to read voltage upto '$$\mathrm{V}$$' volt?

$$\mathrm{G}\left(\frac{\mathrm{V}}{\mathrm{V}_{\mathrm{g}}}-1\right)$$

$$\mathrm{G}\left(\frac{\mathrm{V}+\mathrm{V}_{\mathrm{g}}}{\mathrm{V}}\right)$$

$$\mathrm{G}\left(\frac{\mathrm{V}-\mathrm{V}_{\mathrm{g}}}{\mathrm{V}}\right)$$

$$\mathrm{GV}_{\mathrm{g}}$$

MHT CET 2023 10th May Morning Shift

MCQ (Single Correct Answer)

-0

If only $$1 \%$$ of total current is passed through a galvanometer of resistance '$$G$$' then the resistance of the shunt is

$$\frac{G}{25} \Omega$$

$$\frac{\mathrm{G}}{49} \Omega$$

$$\frac{\mathrm{G}}{2} \Omega$$

$$\frac{\mathrm{G}}{99} \Omega$$

MHT CET 2023 10th May Morning Shift

MCQ (Single Correct Answer)

-0

A voltmeter of resistance $$150 \Omega$$ connected across a cell of e.m.f. $$3 \mathrm{~V}$$ reads $$2.5 \mathrm{~V}$$. What is the internal resistance of the cell?

$$10 \Omega$$

$$15 \Omega$$

$$20 \Omega$$

$$30 \Omega$$

MHT CET 2023 9th May Evening Shift

MCQ (Single Correct Answer)

-0

A galvanometer of resistance $$20 ~\Omega$$ gives a deflection of 5 divisions when $$1 \mathrm{~mA}$$ current flows through it. The galvanometer scale has 50 divisions. To convert the galvanometer into a voltmeter of range 25 volt, we should connect a resistance of

$$1240 ~\Omega$$ in series.

$$2480 ~\Omega$$ in series.

$$2480 ~\Omega$$ in parallel.

$$20 ~\Omega$$ in parallel.

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