JEE Main 2024 (Online) 9th April Morning Shift | Current Electricity Question 4 | Physics

A galvanometer has a coil of resistance $$200 \Omega$$ with a full scale deflection at $$20 \mu \mathrm{A}$$. The value of resistance to be added to use it as an ammeter of range $$(0-20) \mathrm{mA}$$ is :

$$0.40\Omega$$

$$0.10\Omega$$

$$0.20\Omega$$

$$0.50\Omega$$

JEE Main 2024 (Online) 9th April Morning Shift

MCQ (Single Correct Answer)

-1

The equivalent resistance between A and B is :

JEE Main 2024 (Online) 9th April Morning Shift Physics - Current Electricity Question 19 English

18 $$\Omega$$

27 $$\Omega$$

19 $$\Omega$$

25 $$\Omega$$

JEE Main 2024 (Online) 8th April Evening Shift

MCQ (Single Correct Answer)

-1

Water boils in an electric kettle in 20 minutes after being switched on. Using the same main supply, the length of the heating element should be _________ to __________ times of its initial length if the water is to be boiled in 15 minutes.

increased, $$\frac{3}{4}$$

increased, $$\frac{4}{3}$$

decreased, $$\frac{3}{4}$$

decreased, $$\frac{4}{3}$$

JEE Main 2024 (Online) 8th April Morning Shift

MCQ (Single Correct Answer)

-1

In the given circuit, the terminal potential difference of the cell is :

JEE Main 2024 (Online) 8th April Morning Shift Physics - Current Electricity Question 10 English