MyQuestionIcon

1

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

Solenoid

A metallic ri...

Question

A metallic ring is kept on a hard paper (which is transparent to magnetic field) such that its centre coincide with the axis of a long solenoid as shown. If current in solenoid is switched on then normal reaction between rind and paper will

A

Decrease

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

B

Increase

No worries! We‘ve got your back. Try BYJU‘S free classes today!

C

Remain unchanged

No worries! We‘ve got your back. Try BYJU‘S free classes today!

D

First decreases and then increases

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is A Decrease
If current in solenoid is suritched on then normal reaction between ring and paper will decrease. According to the figure and conditions given.

Suggest Corrections

thumbs-up

0

Similar questions

Q. A metal ring kept (supported by a card board) on the top of a fixed solenoid carry a current I as shown in figure. The centre of the ring coincides with the axis of the solenoid. If the current in the solenoid is switched off, then

Q. A tightly wound, long solenoid is kept with its axis parallel to a large metal sheet carrying a surface current. The surface current through a width

d l

of the sheet is

K d l

and the number of turns per unit length of the solenoid is

n

. The magnetic field near the centre of the solenoid is found to be zero. Find the current in the solenoid.

Q. An 8 cm long wire carrying a current of 10 A is placed inside a solenoid perpendicular to its axis. If the magnetic field inside the solenoid is 0.3 T, then magnetic force on the wire is

Q. A solenoid of

2 m

200

turns per meter and current

2 A

flows through it as shown below. What would be the magnetic field at the point

P

on the axis of the solenoid

5 m

away from the centre ?

Q. A 90 cm long solenoid has six layers of windings of 450 turns each. If the diameter of solenoid is 2.2 cm and current carried is 6 A, then the magnitude of magnetic field inside the solenoid, near its centre is:

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Applications of Ampere's Law

PHYSICS

Watch in App

explore_more_icon

Explore more

Standard XII Physics

Join BYJU'S Learning Program

CrossIcon