Physics - Magnetism Question with Solution | TestHub

PhysicsMagnetismBiot-savart's & Ampere's Circuital lawEasy2 minPYQ_2020

PhysicsEasysingle choice

If in a circular coil $A$ of radius $R,$ current $i$ is flowing and in another coil $B$ of radius $2 R$ , a current $2 i$ is flowing, then the ratio of the magnetic fields, $B_{A}$ and $B_{B}$ produced by them will be

Options:

Answer:

Solution:

Magnetic field in circular coil $A$ is

Similarly, $B_{A} = \frac{μ_{0} N i}{2 R}$

$R$ is radius and $i$ is current flowing in coil.

$B_{B} = \frac{μ_{0} N (2 i)}{2 . (2 R)}$

$= \frac{μ_{0} N i}{2 R}$

$\frac{B_{A}}{B_{B}} = \frac{1}{1} = 1$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:MagnetismSubtopic:Biot-savart's & Ampere's Circuital law

⏱ 2mℹ️ Source: PYQ_2020

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