MHT CET 2021 22th September Morning Shift | Current Electricity Question 37 | Physics

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

$$E_2=\frac{E_1}{4}$$

$$\mathrm{E}_2=\frac{\mathrm{E}_1}{2}$$

$$\mathrm{E}_2=\mathrm{E}_1$$

$$\mathrm{E}_2=4 \mathrm{E}_1$$

MHT CET 2021 22th September Morning Shift

MCQ (Single Correct Answer)

-0

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

charge, energy

charge, momentum

energy, charge

momentum, charge

MHT CET 2021 21th September Evening Shift

MCQ (Single Correct Answer)

-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?

$$0.02 \mathrm{~A}$$

$$0.04 \mathrm{~A}$$

$$0.08 \mathrm{~A}$$

$$0.01 \mathrm{~A}$$

MHT CET 2021 21th September Evening Shift

MCQ (Single Correct Answer)

-0

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

MHT CET 2021 21th September Evening Shift Physics - Current Electricity Question 45 English

1.8 A

1.2 A

1.5 A

1 A

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