Physics-
General
Easy

Question

An infinite straight current carrying conductor is bent into a circle as shown in the figure. If the radius of the circle is R, the magnetic field at the center of the coil is

  1. infinite    
  2. zero    
  3. fraction numerator mu subscript o end subscript over denominator 4 pi end fraction fraction numerator 2 I over denominator R end fraction pi    
  4. fraction numerator mu subscript o end subscript over denominator 4 pi end fraction fraction numerator 2 I over denominator R end fraction open parentheses pi plus 1 close parentheses    

The correct answer is: fraction numerator mu subscript o end subscript over denominator 4 pi end fraction fraction numerator 2 I over denominator R end fraction open parentheses pi plus 1 close parentheses

Related Questions to study

General
Physics-

ABCDEF is a regular hexagon. What is the value of stack A B with rightwards arrow on top plus stack A C with rightwards arrow on top plus stack A D with rightwards arrow on top plus stack A E with rightwards arrow on top plus stack A F with rightwards arrow on top

ABCDEF is a regular hexagon. What is the value of stack A B with rightwards arrow on top plus stack A C with rightwards arrow on top plus stack A D with rightwards arrow on top plus stack A E with rightwards arrow on top plus stack A F with rightwards arrow on top

Physics-General
General
Physics-

The resultant of the three vectors stack O A with rightwards arrow on top comma   stack O B with rightwards arrow on top comma     text and end text   stack O C with rightwards arrow on top shown in figure.

The resultant of the three vectors stack O A with rightwards arrow on top comma   stack O B with rightwards arrow on top comma     text and end text   stack O C with rightwards arrow on top shown in figure.

Physics-General
General
Physics-

In the figure, stack E with rightwards arrow on top   minus   stack D with rightwards arrow on top   plus   stack C with rightwards arrow on top equals

In the figure, stack E with rightwards arrow on top   minus   stack D with rightwards arrow on top   plus   stack C with rightwards arrow on top equals

Physics-General
parallel
General
Physics-

Elastic waves in solid are:

Elastic waves in solid are:

Physics-General
General
Physics-

The magnetic field at a distance r from a long wire carrying current I is 0.4 tesla. The magnetic field at a distance 2r is

The magnetic field at a distance r from a long wire carrying current I is 0.4 tesla. The magnetic field at a distance 2r is

Physics-General
General
Physics-

How much heat energy is gained when 5 kg of water at 20oC is brought to its boiling point (Specific heat of water = 4.2 kJ kg-1c-1)

How much heat energy is gained when 5 kg of water at 20oC is brought to its boiling point (Specific heat of water = 4.2 kJ kg-1c-1)

Physics-General
parallel
General
Physics-

Absolute zero (OK) is that temperature at which

Absolute zero (OK) is that temperature at which

Physics-General
General
Physics-

The value of fraction numerator 1 over denominator 4 pi epsilon subscript 0 end subscript end fraction is

The value of fraction numerator 1 over denominator 4 pi epsilon subscript 0 end subscript end fraction is

Physics-General
General
Physics-

A force of 50 N acts on the block at the angle shown in the diagram. The block moves a horizontal distance of 3.0 m. Then the work done by this force

A force of 50 N acts on the block at the angle shown in the diagram. The block moves a horizontal distance of 3.0 m. Then the work done by this force

Physics-General
parallel
General
Physics-

A cannon after firing recoils due to

A cannon after firing recoils due to

Physics-General
General
Physics-

A jet engine works on the principle of

A jet engine works on the principle of

Physics-General
General
Physics-

Newton’s first law of motion describe the following

Newton’s first law of motion describe the following

Physics-General
parallel
General
Physics-

Wavelength of B.B.C. is 15 m, find the frequency of the waves broadcast by it if velocity of radio wave is 3 × 108 m s–1.

Wavelength of B.B.C. is 15 m, find the frequency of the waves broadcast by it if velocity of radio wave is 3 × 108 m s–1.

Physics-General
General
Physics-

The wavelength of sound in air is 100 cm. Its frequency is:

The wavelength of sound in air is 100 cm. Its frequency is:

Physics-General
General
Physics-

When the system is in equilibrium, the net force is

When the system is in equilibrium, the net force is

Physics-General
parallel

card img

With Turito Academy.

card img

With Turito Foundation.

card img

Get an Expert Advice From Turito.

Turito Academy

card img

With Turito Academy.

Test Prep

card img

With Turito Foundation.