JEE Main 2022 (Online) 27th June Morning Shift | Current Electricity Question 124 | Physics

A 72 $$\Omega$$ galvanometer is shunted by a resistance of 8 $$\Omega$$. The percentage of the total current which passes through the galvanometer is :

0.1%

10%

25%

0.25%

JEE Main 2022 (Online) 26th June Evening Shift

MCQ (Single Correct Answer)

-1

The equivalent resistance between points A and B in the given network is :

JEE Main 2022 (Online) 26th June Evening Shift Physics - Current Electricity Question 125 English

65$$\Omega$$

20$$\Omega$$

5$$\Omega$$

2$$\Omega$$

JEE Main 2022 (Online) 26th June Morning Shift

MCQ (Single Correct Answer)

-1

An aluminium wire is stretched to make its length, 0.4% larger. The percentage change in resistance is :

0.4%

0.2%

0.8%

0.6%

JEE Main 2022 (Online) 25th June Evening Shift

MCQ (Single Correct Answer)

-1

Two cells of same emf but different internal resistances r₁ and r₂ are connected in series with a resistance R. The value of resistance R, for which the potential difference across second cell is zero, is :

r₂ $$-$$ r₁

r₁ $$-$$ r₂

r₁

r₂

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