1
MHT CET 2023 9th May Morning Shift
+1
-0

In a meter bridge experiment null point is obtained at $$l \mathrm{~cm}$$ from the left end. If the meter bridge wire is replaced by a wire of same material but twice the area of across-section, then the null point is obtained at a distance

A
$$2 l \mathrm{~cm}$$ from left end.
B
$$l \mathrm{~cm}$$ from left end.
C
$$l / 2 \mathrm{~cm}$$ from left end.
D
$$l / 4 \mathrm{~cm}$$ from left end.
2
MHT CET 2021 21th September Evening Shift
+1
-0

A moving coil galvanometer is converted into an ammeter, reading upto $$0.04 \mathrm{~A}$$ by connecting a shunt of resistance '$$3 \mathrm{r}$$' across it and then into an ammeter reading upto $$0.8 \mathrm{~A}$$, when a shunt of resistance '$$r$$' is connected across it. What is the maximum current which can be sent through this galvanometer if no shunt is used?

A
$$0.02 \mathrm{~A}$$
B
$$0.04 \mathrm{~A}$$
C
$$0.08 \mathrm{~A}$$
D
$$0.01 \mathrm{~A}$$
3
MHT CET 2021 21th September Evening Shift
+1
-0

A current through 1 $$\Omega$$ resistance in the following circuit is A
1.8 A
B
1.2 A
C
1.5 A
D
1 A
4
MHT CET 2021 21th September Morning Shift
+1
-0

In a meter bridge experiment, the balance point is obtained at length $$\ell_1 \mathrm{~cm}$$ from left end when resistances in the left gap and right gap are $$5 \Omega$$ and $$R \Omega$$ respectively. When the resistance $$R$$ is shunted with equal resistance, the new balance point is at $$1.6 \ell_1$$. The resitance $$R$$ in ohm is

A
25
B
15
C
10
D
20
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Physics
Mechanics
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Electromagnetism
Modern Physics
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Inorganic Chemistry
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