+91-705-589-3577
FlagBACK
Flag Magnetism> A coil having N turns is wound tightly in...
question mark

A coil having N turns is wound tightly in the form of a spiral with inner and outer radii a and b respectively.When current I passes through the coil,the magnetic field at centre is??

Varun Shelke , 10 Years ago
Grade 12
anser 1 Answers
Mastermind Joker
Consider an element of thickness dr at a distance r from coildn = dr * No of turns per unit length = dr* N/(b-a) Using Biot savart law, dB = μ0Idn/2rdB = μ0INdr/(b-a)r B = integral(μ0INdr/(b-a)r) b/w a and b = μ0INln(b/a)/b-a
Last Activity: 8 Years ago
star
LIVE ONLINE CLASSES

Prepraring for the competition made easy just by live online class.

tv

Full Live Access

material

Study Material

removal

Live Doubts Solving

assignment

Daily Class Assignments


Other Related Questions on magnetism

question mark
Four long co-axial thin walled cylindrical conductor A, B, C and D have radii R. 2R 3R and 4R respectively. A and C carry current I and 31 respectively to plane of paper on the other hand, B and D carry and 41 respectively outward to plane of paper. Then 21
magnetism
1 Answer Available

Last Activity: 3 Years ago

question mark
I need solution of these questions.............................Magnetic effect of current
magnetism
1 Answer Available

Last Activity: 3 Years ago

question mark
A freely suspended iron rod does not point at N-S directions alwalys .why
 
 
magnetism
1 Answer Available

Last Activity: 4 Years ago

question mark
What is magnetic entropy change? For my knowledge, I know entropy is randomness or disorder. So here that magnetic refers to the magnetic dipole moments?
magnetism
1 Answer Available

Last Activity: 4 Years ago

question mark
Derive the relation between magnetic field intensity (H) and magnetization (M) for a magnetic material placed in a magnetizing field. 
magnetism
1 Answer Available

Last Activity: 4 Years ago