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Physics - Magnetism Question with Solution | TestHub

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

PhysicsEasysingle choice

A long solenoid carrying a current produces a magnetic field $B$ along its axis. If the current is doubled and the number of turns per $c m$ is halved, then the new value of the magnetic field is

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Answer:

Solution:

Magnetic field on the axis of a solenoid

$B = μ_{0} n i$

$B' = μ_{0} (\frac{n}{2}) (2 i) = B$

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

⏱ 2mℹ️ Source: PYQ_2020

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