Home
Class 12
PHYSICS
A magnetising field of 1600 Am^(-1) prod...

A magnetising field of `1600 Am^(-1)` produces a magnetic flux `2.4 xx 10^(-5)` weber in an iron bar of cross-sectional area `0.2 cm^(2)` . The susceptibility of the iron bar will be

A. 1788
B. 1192
C. 596
D. 298

A

1788

B

1192

C

596

D

298

Text Solution

Verified by Experts

The correct Answer is:
C
`mu = B/H = (phi)/(AH)`
` = (2.4 xx 10 ^(-5))/(0.2 xx 10 ^(-4) xx 16 xx 10 ^(2))`
`= (2.4 xx 10 ^(-5))/(16 xx 2 xx 10 ^(-3))`
` = (1.2)/(16) xx 10 ^(-2)`
` = 3/4 xx 10 ^(-3)`
` = 0.75 xx 10 ^(-3) Wb//mA`
`mu _(r) = (0.75 xx 10 ^(-3))/( 4 pi xx 10 ^(-7))`
` mu _(r) = (75)/(4pi) xx 10 ^(2)`
` = 5.9713376`
`mu _(r) = 597`
` x _(m) = mu_(r) -1`
`x _(m) = 597 -1`
` x _(m) = 596`
Promotional Banner

Similar Questions

Explore conceptually related problems

A magnetising field of 1600 Am^(-1) produces a magnetic flux 2.4 xx 10^(-5) weber in an iron bar of cross-sectional area 0.2 cm^(2) . The susceptibility of the iron bar will be A. 1788 B. 1192 C. 596 D. 298

A magnetising field of 1500 A//m produces a flux of 2*4xx10^-5 weber in a bar of iron of cross-sectional area 0*5cm^2 . Calculate the permeability and susceptibility of the iron bar used.

A magnetising field of 1500""(A)/(m) produces a magnetic flux density of 0.48 Wb//m^(2) in a iron bar . Calculate permeability of iron bar used .

A magnetising field of 2xx10^(3)Am^(-1) produces a magnetic flux density of 8piT in an iron rod. The relative permeability of the rod will be

The magnetic field of 20CGS units produces of a flux of 2400 CGS units in a bar of cross section 0.2cm^(2) Calculate the (i) permeability and (ii) susceptibility of the bar.

An iron rod is placed parallel to magnetic field of intensity 2000 Am^-1 . The magnetic flux through the rod is 6xx 10^-1 Wb and its cross-sectional area is 3 cm^2 . The magnetic permeability of the rod in Wb A^-1 m^-1 is

The magnetic field inside a long solenoid having 50 turns cm^(-1) is increased from 2.5 xx 10^(-3) T to 2.5 T when an iron core of cross-sectional area 4 cm^2 is inserted into it. Find (a) the current in the solenoid, (b) the magnetization I of the core and (c) the pole strength developed in the core.

A lawn sprinkler has 20 holes, each of cross-sectional area 2.0 x 10^(-2) cm^(2) , and is connected to a hose pipe of cross sectional area 2.4 cm^(2) . If the speed of water in the hose pipe is 1.5 ms^(-1) , the speed of water as it emerges from the holes is

A bar mangnet has length 3 cm cross sectional area 2 cm^(2) and magnetic moment 3 Am^(2) the intensity of magnetisation of the bar magnet is

The intensity of magnetisation of a bar magnet is 5xx10^(4)A-m^(-1) . The magnetic length and the area of cross section of the magnet are 12cm and 1cm^(-2) respectivley. The magnitude of magnetic moment of this bar magnet (in SI unit) is.