Physics Crash Course NEET>Chapter 14 - Magnetic Effects of Current and Magnetism>Level 1>Q 76

EASY

NEET

IMPORTANT

Earn 100

A loop of flexible wire of irregular shape carrying current is placed in an external magnetic field. Identify the effect of the field on the wire.

35.29% studentsanswered this correctly

Important Questions on Magnetic Effects of Current and Magnetism

MEDIUM

NEET

IMPORTANT

Physics Crash Course NEET>Chapter 14 - Magnetic Effects of Current and Magnetism>Level 1>Q 77

In an experiment, setup

A

consists of two parallel wires which carry currents in opposite directions as shown in the figure. A second setup

B

is identical to setup

A

, except that there is a metal plate between the wires.

Question Image

Let $F_{A}$ and $F_{B}$ be the magnitude of the force between the two wires in setup $A$ and setup $B$ , respectively.

MEDIUM

NEET

IMPORTANT

Physics Crash Course NEET>Chapter 14 - Magnetic Effects of Current and Magnetism>Level 1>Q 78

A wire of length,

l

carries a current

I

along the

X

- axis. The magnetic force acting on the wire is given by

\vec{F} = I B_{0} L (\hat{k} - \hat{j}) T

where

B_{0}

is a constant. The existing magnetic field

\vec{B}

is

EASY

NEET

IMPORTANT

Physics Crash Course NEET>Chapter 14 - Magnetic Effects of Current and Magnetism>Level 1>Q 79

The force acting on a current carrying wire joining two fixed points

A

and

B

in a uniform magnetic field

EASY

NEET

IMPORTANT

Physics Crash Course NEET>Chapter 14 - Magnetic Effects of Current and Magnetism>Level 1>Q 80

What is the net force on the square coil?

Question Image

EASY

NEET

IMPORTANT

Physics Crash Course NEET>Chapter 14 - Magnetic Effects of Current and Magnetism>Level 1>Q 81

A current $i$ is flowing in a conductor as shown in the figure.The magnetic induction at point $O$ will be

Question Image

EASY

NEET

IMPORTANT

Physics Crash Course NEET>Chapter 14 - Magnetic Effects of Current and Magnetism>Level 1>Q 82

A current-carrying wire of certain length is bent to form an arc that subtends an angle

θ

at the centre. Let

B

be the magnetic field at the centre due to this wire. The correct graph between

B

and

θ

is

EASY

NEET

IMPORTANT

Physics Crash Course NEET>Chapter 14 - Magnetic Effects of Current and Magnetism>Level 1>Q 83

The magnetic field at the centre ${}^{'}O^{'}$ in the given figure is

Question Image

EASY

NEET

IMPORTANT

Physics Crash Course NEET>Chapter 14 - Magnetic Effects of Current and Magnetism>Level 1>Q 84

Two long parallel wires are at a distance of

4 cm

. They carry currents

I

and

3 I

in same direction. Where will the field produced by both wires be zero from current

I

?