1
MHT CET 2021 22th September Morning Shift
+1
-0

In a wheatstone's bridge, three resistances $$\mathrm{P}, \mathrm{Q}$$ and $$\mathrm{R}$$ are connected in the three arms and the fourth arm is formed by two resistances $$S_1$$ and $$S_2$$ connected in parallel. The condition for the bridge to be balanced is

A
$$\frac{P}{Q}=\frac{2 R}{S_1+S_2}$$
B
$$\frac{P}{Q}=\frac{R\left(S_1+S_2\right)}{2 S_1 S_2}$$
C
$$\frac{P}{Q}=\frac{R\left(S_1+S_2\right)}{S_1 S_2}$$
D
$$\frac{P}{Q}=\frac{R\left(S_1 S_2\right)}{S_1+S_2}$$
2
MHT CET 2021 22th September Morning Shift
+1
-0

If a current flowing in a coil is reduced to half of its initial value, the relation between the new energy $$\left(E_2\right)$$ and the original energy $$\left(E_1\right)$$ stored in the coil will be

A
$$E_2=\frac{E_1}{4}$$
B
$$\mathrm{E}_2=\frac{\mathrm{E}_1}{2}$$
C
$$\mathrm{E}_2=\mathrm{E}_1$$
D
$$\mathrm{E}_2=4 \mathrm{E}_1$$
3
MHT CET 2021 22th September Morning Shift
+1
-0

The Kirchhoff's current law and voltage law are respectively based upon the conservation of

A
charge, energy
B
charge, momentum
C
energy, charge
D
momentum, charge
4
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
$$0.01 \mathrm{~A}$$
EXAM MAP
Medical
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