MEDIUM

JEE Main

IMPORTANT

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Two batteries with e.m.f. $12 V$ and $13 V$ are connected in parallel across a load resistor of $10 Ω$ . The internal resistance of the two batteries are $1 Ω$ and $2 Ω$ respectively. The voltage across the load lies between,

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Important Questions on Current Electricity

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 14 - Current Electricity>JEE Main - 8th April 2018>Q 107

On interchanging the resistances, the balance point of a meter bridge shifts to the left by

10 cm

. The resistance of their series combination is

1 kΩ

. How much was the resistance on the left slot before interchanging the resistances?

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 14 - Current Electricity>JEE Main - 8th April 2018>Q 108

In a potentiometer experiment, it is found that no current passes through the galvanometer when the terminals of the cell are connected across 52 cm of the potentiometer wire. If the cell is shunted by a resistance of

5 Ω

,a balance is found when the cell is connected across 40 cm of the wire. Find the internal resistance of the cell.

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 14 - Current Electricity>JEE Main - 15th April 2018>Q 109

In a meter bridge as shown in the figure, it is given that resistance

Y = 12.5 Ω

and that the balance is obtained at a distance

39.5 cm

from end

A

(by jockey

J

). After interchanging the resistances

X

and

Y

a new balance point is found at a distance

l_{2}

from end

A

. What are the values of

X

(in

Ω

) and

l_{2}

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 14 - Current Electricity>JEE Main - 15th April 2018>Q 110

In the given circuit all resistance is of the value of

R

ohm each. The equivalent resistance between

A

and

B

is:

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 14 - Current Electricity>JEE Main - 16th April 2018>Q 111

A heating element has a resistance of

100 Ω

at room temperature. When it is connected to a supply of

220 V

, a steady current of

2 A

passes in it and temperature is

500^{o} C

more than the room temperature. The temperature coefficient of resistance of the heating element is

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 14 - Current Electricity>JEE Main - 2nd April 2017>Q 112

In the above circuit the current in each resistance is:

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 14 - Current Electricity>JEE Main - 2nd April 2017>Q 113

Which of the following statements is false?

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 14 - Current Electricity>JEE Main - 8th April 2017>Q 114

9 V

battery with an internal resistance of

0.5 Ω

is connected across an infinite network, as shown in the figure. All ammeters

A_{1}, A_{2}, A_{3}

and voltmeter

V

are ideal.
Choose the correct statement.

Two batteries with e.m.f. 12 V and 13 V are connected in parallel across a load resistor of 10 Ω. The internal resistance of the two batteries are 1 Ω and 2 Ω respectively. The voltage across the load lies between,

Important Questions on Current Electricity

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Two batteries with e.m.f. $12 V$ and $13 V$ are connected in parallel across a load resistor of $10 Ω$ . The internal resistance of the two batteries are $1 Ω$ and $2 Ω$ respectively. The voltage across the load lies between,