Given below are two statements : One is labelled as Assertion A and the other is labelled as Reason R. Assertion A : For measuring the potential difference across a resistance of 600 Ω , the voltmeter with resistance 1000 Ω will be preferred over voltmeter with resistance 4000 Ω . Reason R : Voltmeter with higher resistance will draw smaller current than voltmeter with lower resistance. In the light of the above statements, choose the most appropriate answer from the options given below

A is not correct but R is correct

Both A and R are correct and R is the correct explanation of A

Both A and R are correct but R is not the correct explanation of A

A is correct but R is not correct

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JEE Main

IMPORTANT

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A triangular shaped wire carrying $10 A$ current is placed in a uniform magnetic field of $0.5 T$ , as shown in figure. The magnetic force on segment $C D$ is (Given $B C = C D = B D = 5 cm$ ).

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Important Questions on Magnetic Effects of Current and Magnetism

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 15 - Magnetic Effects of Current and Magnetism>JEE Main - 28 July 2022 Shift 2>Q 166

The magnetic field at the center of current carrying circular loop is

B_{1}

. The magnetic field at a distance of

\sqrt{3}

times radius of the given circular loop from the center on its axis is

B_{2}

. The value of

\frac{B_{1}}{B_{2}}

will be

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 15 - Magnetic Effects of Current and Magnetism>JEE Main - 29 July 2022 Shift 1>Q 167

A closely wounded circular coil of radius

5 cm

produces a magnetic field of

37.68 \times 10^{- 4} T

at its center. The current through the coil is _____

A

. [Given, number of turns in the coil is

100

and

π = 3.14

]

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 15 - Magnetic Effects of Current and Magnetism>JEE Main - 29 July 2022 Shift 1>Q 168

A wire of length

314 cm

carrying current of

14 A

is bent to form a circle. The magnetic moment of the coil is

A - m^{2}

. [Given

π = 3.14

]

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 15 - Magnetic Effects of Current and Magnetism>JEE Main - 29 July 2022 Shift 2>Q 169

A wire $X$ of length $50 cm$ carrying a current of $2 A$ is placed parallel to a long wire $Y$ of length $5 m$ . The wire $Y$ carries a current of $3 A$ . The distance between two wires is $5 cm$ and currents flow in the same direction. The force acting on the wire $Y$ is :

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JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 15 - Magnetic Effects of Current and Magnetism>JEE Main - 29 July 2022 Shift 2>Q 170

The vertical component of the earth's magnetic field is

6 \times 10^{- 5} T

at any place where the angle of dip is

37 °

. The earth's resultant magnetic field at that place will be (Given

\tan 37 ° = \frac{3}{4}

)

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 15 - Magnetic Effects of Current and Magnetism>JEE Main - 24 January 2023 Shift 1>Q 171

Two long straight wires

P

and

Q

carrying equal current

10 A

each were kept parallel to each other at

5 cm

distance. Magnitude of magnetic force experienced by

10 cm

length of wire

P

F_{1}

. If distance between wires is halved and currents on them are doubled, force

F_{2}

10 cm

length of wire

P

will be:

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 15 - Magnetic Effects of Current and Magnetism>JEE Main - 24 January 2023 Shift 1>Q 172

A circular loop of radius

R

is carrying current

i A

. The ratio of magnetic field at the centre of circular loop and at a distance

R

from the center of the loop on its axis is :

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR PHYSICS>Chapter 15 - Magnetic Effects of Current and Magnetism>JEE Main - 24 January 2023 Shift 2>Q 173

A long solenoid is formed by winding $70$ turns ${cm}^{- 1}$ . If $2.0 A$ current flows, then the magnetic field produced inside the solenoid is ______________.

$(µ_{0} = 4 π \times 10^{- 7} T m A^{- 1})$

A triangular shaped wire carrying 10 A current is placed in a uniform magnetic field of 0.5 T, as shown in figure. The magnetic force on segment CD is (Given BC=CD=BD=5 cm).

Important Questions on Magnetic Effects of Current and Magnetism

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A triangular shaped wire carrying $10 A$ current is placed in a uniform magnetic field of $0.5 T$ , as shown in figure. The magnetic force on segment $C D$ is (Given $B C = C D = B D = 5 cm$ ).