CameraIcon

SearchIcon

MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Physical Quantities

A flat coil o...

Question

A flat coil of 500 turns, each of area 50 cm2, rotatesin a uniform magnetic field of 0.14 Wb/m2 about anaxis normal to the field at an angular speed of150 rad/s. The coil has a resistance of 5 Ω . Theinduced e.m.f. is applied to an external resistanceof 10 Ω . The peak current through the resistance is

Open in App

Solution

Suggest Corrections

thumbs-up

0

Similar questions

Q. A flat coil of

500

turns, each of area

50 c m^{2}

, rotates in a uniform magnetic field of

0.1 W b / m^{2}

about an axis normal to the field at an angular speed of

150 r a d / s

. (Initially magnetic field was along the area vector of the field). The coil has a resistance of

15 Ω

. Maximum induced current in the coil is

Q. A closed coil consists of

500

turns on a rectangular frame of area

4.0 {cm}^{2}

and has a resistance of

50 Ω

. The coil is kept with its plane perpendicular to a uniform magnetic field of

0.2 {wb/m}^{2}

, the amount of charge flowing through the coil if it is turned over (rotated through

180^{\circ})

Q. In an AC generator, a coil with

N

turns, all of them has same area

A

and total resistance

R

, rotates with an angular frequency

ω

in a magnetic field

B

. The peak value of current in the coil is-

Q. An AC generator consists of a coil of 2000 turns each of area 80

c m^{2}

and rotating at an angular speed of 200 rpm in a uniform magnetic field of

4.8 \times 10^{- 2} T

. Calculate the peak of emf in the coil.

Q. A coil of 1200 turns and mean area of 500

c m^{2}

is held perpendicular to a uniform magnetic field of induction

4 \times 10^{- 4}

T. The resistance of the coil is 20 ohms. When the coil is rotated through

180^{0}

in the magnetic field in 0.1 s, the average electric current (in mA) induced is :

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Physical Quantities

PHYSICS

Watch in App

explore_more_icon

Explore more

Physical Quantities

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon