A circular loop of radius r of conductin...

A circular loop of radius r of conducting wire connected with a voltage source of zero internal resistance produces a magnetic field B at its centre. If instead, a circular loop of radius 2r, made of same material having the same cross section is connected to the same voltage source, what will be magnetic field at its centre?

`B/2`

`B/4`

`2B`

`B`

Text Solution

Verified by Experts

Topper's Solved these Questions

QUESTION PAPER 2017
WB JEE PREVIOUS YEAR PAPER|Exercise PHYSICS|36 Videos
QUESTION PAPER 2019
WB JEE PREVIOUS YEAR PAPER|Exercise PHYSICS (CATEGORY -III)|3 Videos

Similar Questions

Explore conceptually related problems

A circular loop of radius r of conducting wire connected with a voltage source of zero internal resistance produces a magnetic field B at its centre. If instead, a circular loop of radius 2r, made of same material having the same cross section is connected to the same cross section is connected to the same voltage source, what will be the magnetic field at its centre?

Magnetic field intensity H at the centre of a circular loop of radius r carrying current I e.m.u is

Ratio of magnetic fields at the centre of a current carrying coil of radius r and at a distance 3r on its axis is

An electric current is flowing in a circular wire of radius a. At what distance from the centre on the axis of the circular wire will the magnetic field be 1/8th of its value at the centre?

Obtain for the magnetic induction, vector at a point on the axis of a circular loop of radius r, at a distance x. If i be the current passing through the loop then draw the lines of the forces for the magnetic field.

The magnetic field due to a current carrying circular loop of radius 3 cm at a point on the axis at a distance of 4 cm from the centre is 54muT . What will be its value at the centre of the loop ?

A circular coil A is of radius R and current I, another circular coil 'B’ is of radius 2R and current 2I.The ratio of magnetic field B_A : B_B at their centre is—

A circular copper ring of radius r, placed in vacuum, has a charge q on it. Find out the electric fields on the axis of the ring at a distance x from its centre. ?

What will be the change of magnetic induction vector at the centre of a loop (circular),If its radius is made double, keeping current fixed

WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2018-PHYSICS

A proton of mass m moving with a speed v(lt lt c, velocity of light in...
Text Solution
|
A uniform current is flowing along the length of an infinite, straight...
Text Solution
|
A circular loop of radius r of conducting wire connected with a voltag...
Text Solution
|
An alternating current is flowing through a series LCR circuit. It is ...
Text Solution
|
An electric bulb, a capacitor, a battery and a switch are all in serie...
Text Solution
|
Four resistors, 100Omega, 200 Omega, 300 Omega and 400 Omega are conne...
Text Solution
|
What will be current through the 200Omega resistor in the given circui...
Text Solution
|
A point source is placed at co-ordinates (0,1), in X-Y plane. A ray of...
Text Solution
|
Two identical equiconvex lenses, each of focal length f, are placed si...
Text Solution
|
There is a small air bubble at the centre of a solid glass sphere of r...
Text Solution
|
If Young's double slit experiment is done with white light, which of t...
Text Solution
|
How the linear velocity v of an electron in the bOhr orbit is related ...
Text Solution
|
If the half life of a radioactive nucleus is 3 days, nearly what frac...
Text Solution
|
An electron accelerated through a potential of 10,000 V from rest has ...
Text Solution
|
In the circuit shown inputs A and B are in states, 1 and 0 respectivel...
Text Solution
|
What will be the current flowing through the 6 KΩ resistor in the circ...
Text Solution
|
In case of a simple harmonic motion, if the velocity is plotted along ...
Text Solution
|
A block of mass m(2) is placed on a horizontal table and another block...
Text Solution
|
In a triangle ABC, the sides AB and AC are represented by the vectors ...
Text Solution
|
The velocity (v) of a particle (under of force F) depends on its dista...
Text Solution
|