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Byju's Answer
Standard IX
Physics
Magnetic Field Due to a Straight Current Carrying Conductor
State biot-sa...
Question
State biot-savarts law in vector form . express the magnetic field due to an elemental carrying current I at a distance r from the element
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Q.
(a) Write using Biot - Savart Law, the expression for magnetic field
→
B
due to an element
→
d
l
carrying current
I
at a distance
→
r
from it in a vector form.
Hence derive the expression for the magnetic field due to a current carrying loop of radius
R
at a point P distant
x
from its centre along the axis of the loop.
(b) Explain how Biot - Savart law enables one to express the Ampere's circuital law in the integral form, viz.,
→
B
.
→
d
l
=
μ
o
I
where
I
is the total current passing through the surface.
Q.
State Biot-Savart law. Derive an expression for the intensity of magnetic field at the centre of a current carrying circular loop on its basis.
Q.
Use Biot-Savart law to derive the expression for the magnetic field on the axis of a current carrying circular loop of radius R.
Draw the magnetic field lines due to a circular wire carrying current I.
Q.
[CBSE PMT 1996; MP PET 2002; MP PMT 2000]