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A conducting wire bent in the form of a parabola $y^{2} = 2 x$ a current $i = 2 A$ as shown in figure. This wire is placed in a uniform magnetic field $\vec{B} = - 4 \hat{k}$ Tesla. The magnetic force on the wire is (in newton)

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Important Questions on Magnetic Effect of Current

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Beta Question Bank for Engineering: Physics>Chapter 25 - Magnetic Effect of Current>Exercise-2>Q 31

Conductor

A B C

consist of two quarter circular path of radius

R

lies in

X - Y

plane and carries current I as shown. A uniform magnetic field B is switched on in the region that exert force

\vec{F} = \sqrt{2} IR B_{0} \hat{k}

on conductor

A B C

\vec{B}

can be

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Beta Question Bank for Engineering: Physics>Chapter 25 - Magnetic Effect of Current>Exercise-2>Q 32

Find the magnitude and direction of a force vector acting on a unit length of a thin wire, carrying a current,

I = 8.0 A

, at a point

O

, if the wire is bent as shown in Figure

(i)

the curvature radius

R = 10 cm

. Figure

(ii)

the distance between the long parallel segment of the wire

l = 20 cm

F_{1} =

force vector due to figure

(i)

F_{2} =

force vector due to figure

(ii)

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Beta Question Bank for Engineering: Physics>Chapter 25 - Magnetic Effect of Current>Exercise-2>Q 35

Which of the following statement is correct ?

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Beta Question Bank for Engineering: Physics>Chapter 25 - Magnetic Effect of Current>Exercise-2>Q 36

Two identical charged particles enter a uniform magnetic field with same speed but at angles

30^{\circ}

and

60^{\circ}

with field. Let

a, b

and

c

be the ratio of their time periods, radii and pitches of the helical paths than

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Beta Question Bank for Engineering: Physics>Chapter 25 - Magnetic Effect of Current>Exercise-2>Q 37

Consider the following statements regarding a charged particle in a magnetic field. Which of the statements are true ?

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Beta Question Bank for Engineering: Physics>Chapter 25 - Magnetic Effect of Current>Exercise-2>Q 38

A particle of charge

q

and velocity

v

passes undeflected through a space with non-zero electric field

E

and magnetic field

B

. The undeflecting conditions will hold if

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Beta Question Bank for Engineering: Physics>Chapter 25 - Magnetic Effect of Current>Exercise-2>Q 39

Two charged particle,

A

and

B

each of charge

+ e

and masses

12

a.m.u.

13

amu respectively follow a circular trajectory in chamber,

X

after the velocity selector as shown in the figure. Both particles enter the velocity selector with speed,

1 .5 \times 10^{6} m s^{- 1}

. A uniform magnetic field of strength,

1.0 T

is maintained within the chamber,

X

and in the velocity selector.

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Beta Question Bank for Engineering: Physics>Chapter 25 - Magnetic Effect of Current>Exercise-2>Q 40

A long straight wire, carrying current

I

, is bent at its midpoint to form an angle of

45^{\circ}

. Magnetic field at point

P

, distance

R

from point of bending is equal to

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A conducting wire bent in the form of a parabola y2=2x a current i=2A as shown in figure. This wire is placed in a uniform magnetic field B→=−4k^ Tesla. The magnetic force on the wire is (in newton)

Important Questions on Magnetic Effect of Current

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A conducting wire bent in the form of a parabola $y^{2} = 2 x$ a current $i = 2 A$ as shown in figure. This wire is placed in a uniform magnetic field $\vec{B} = - 4 \hat{k}$ Tesla. The magnetic force on the wire is (in newton)