1
MHT CET 2021 22th September Morning Shift
MCQ (Single Correct Answer)
+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
$$\mathrm{E}_2=4 \mathrm{E}_1$$
2
MHT CET 2021 22th September Morning Shift
MCQ (Single Correct Answer)
+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
3
MHT CET 2021 21th September Evening Shift
MCQ (Single Correct Answer)
+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
$$0.01 \mathrm{~A}$$
4
MHT CET 2021 21th September Evening Shift
MCQ (Single Correct Answer)
+1
-0

A current through 1 $$\Omega$$ resistance in the following circuit is

MHT CET 2021 21th September Evening Shift Physics - Current Electricity Question 42 English

A
1.8 A
B
1.2 A
C
1.5 A
D
1 A
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