Home
Class 12
PHYSICS
A long solenoid is formed by winding 20 ...

A long solenoid is formed by winding 20 turns `cm^-1`. What current is necessary to produce a magnetic field of 20 mT inside the solenoid?

Text Solution

Verified by Experts

Solution: The magnetic field inside the solenoid is
` B = (mu_0) ni`
` or, 20 xx 10^-3 T = (4 pi xx (10^-7) TmA^-1) xx (20 xx ((10^2)m^-1) i`
` or, i=8*0A.`
Promotional Banner

Topper's Solved these Questions

  • MAGNETIC FIELD DUE TO CURRENT

    HC VERMA ENGLISH|Exercise worked out examples|15 Videos

  • MAGNETIC FIELD DUE TO CURRENT

    HC VERMA ENGLISH|Exercise Objective 1|12 Videos

  • MAGNETIC FIELD

    HC VERMA ENGLISH|Exercise objective2|9 Videos

  • MAGNETIC PROPERTIES OF MATTER

    HC VERMA ENGLISH|Exercise Short Answer|6 Videos

Similar Questions

Explore conceptually related problems

The magnetic field inside a solenoid is-

A long solenoid is formed by winding 40 turns//cm The current necessary for 40 mT inside the solenoid will be approximately equal to

A thin solenoid of length 0.4 m and having 500 turns of wire carries a current 1A ,then find the magnetic field on the axis inside the solenoid.

A solenoid 50 cm long has 4 layers of windings of 350 turns each. If the current carried is 6A. Find the magnetic field at the centre of the solenoid

A long solenoid has 500 turns. When a current of 2A is passed through it, the resulting magnetic flux linked with each turn of the solenoid is 4xx10^(-3)Wb . The self-inductance of the solenoid is

A solenoid of length 0*5m has a radius of 1cm and is made up of 500 turns. It carries a current of 5A . What is the magnitude of the magnetic field inside the solenoid?

A long solenoid of 50 cm length having 100 turns carries a current of 2.5A. The magnetic field at centre of solenoid is:

A solenoid has length 0.4m , radius 1 cm and 400 turns of wire. If a current fo 5 A is passed through this solenoid, then what is the magnetic field inside the solenoid?

A solenoid of length 0.6 m has a radius of 2 cm and is made up of 600 turns If it carries a current of 4 A, then the magnitude of the magnetic field inside the solenoid is

A long solenoid has 1000 turns. When a current of 4A flows through it, the magnetic flux linked with each turn of the solenoid is 4xx10^(-3)Wb . The self-inductance of the solenoid is