Home
Class 12
PHYSICS
An iron cored toroid has ring radius 7 c...

An iron cored toroid has ring radius 7 cm number of turns 500 . If 2 A current is passed through the wire , what will be the value of magnetic permeability of iron = 1500 .

Text Solution

Verified by Experts

length of the circular axis of the ring
`2pir=2xx(22)/(7)xx7=44"cm"=0.44m`
`therefore` The number of turns per unit length of the toroid ,
`n=(500)/(0.44)m^(-1)`
`therefore` Magnetic field on the axis of the toroid ,
`B=munI=mu_(0)mu_(r)nl`
` =(4pixx10^(-7))xx1500xx(500)/(0.44)xx2= 4.28"Wb". m^(-2)`
Promotional Banner

Topper's Solved these Questions

  • Magnetic Properties of Materials

    CHHAYA PUBLICATION|Exercise Section Ralated Questions|7 Videos

  • Magnetic Properties of Materials

    CHHAYA PUBLICATION|Exercise HIGHER ORDER THINKING SKILL (HOTS) QUESTIONS|17 Videos

  • LIGHT WAVE AND INTERFERENCE OF LIGHT

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|15 Videos

  • OPTICAL INSTRUMENTS

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|8 Videos

Similar Questions

Explore conceptually related problems

Length of a solenoid is 50 cm and its total number of turns is 1250. if 2A current is a passed through it, what will be the magnetic field at any point on its axis ?

The radius of a circular conducting coil of 100 turns is 10 cm . If 2 A current passes through the coil , what will be the magnetic moment generated ?

The radius of toroid is 0.2 m and the number of turns in it is 1000. If 100 mA current passes through the toroid, determine the magnetic field at any point on its axis.

Radius of a circular conducting coil is 7 cm and the number of turns in it is 50 . If 1A current is sent through it , determine the magnetic moment of the coil .

Diameter of a circular conducting coil 20 cm and the number of turns in it is 500 . If 3 a current is sent through it , the strength of the coil becomes equal to the strength of a bar magnet of length 5cm . Determine the pole - strength of the bar magnet .

The length of straight solenoid is 10 cm, number of turns is 5000 , current through it is 10 mA and the relative permeability of the material of its 1500. Determine the magnetic intensity H and the magnetic field B on the axis of the solenoid .

Self-inductance of an air core solenoid increases from 0.01 mH to 10 mH when an iron core is introduced in it. What is the relative magnetic permeability of iron?

A straight solenoid of length 50 cm and across sectional area 1cm^(2) has a self-inductance of 10^(-5)H . If a current of 100 mA passes through it, what will be the magnetic field along its axis?

A wire of length I is bent to form a circular, form of radius R. If I be the current through the loop then what will be its magnetic moment?

A straight wire is used ot form a semi-circular wire of radius 2cm. IF a current I=10A is passing through the wire,then find the magnitude and direction of magnetic induction at the centre of the semicircle.