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Physics - Magnetism Question with Solution | TestHub

PhysicsMagnetismBiot-savart's & Ampere's Circuital lawEasy2 minPYQ_2012

PhysicsEasysingle choice

Two similar coils of radius $R$ are lying concentrically with their planes at right angles to each other. The currents flowing in them are $I$ and $2 I$ , respectively. The resultant magnetic field induction at the centre will beNEET 2012 (Screening)

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Solution:

The magnetic field $(B)$ at the centre of circular current carrying coil of radius $R$ and current $I, B = \frac{μ _{0} I}{2 R}$ Similarly, if current $= 2 I$ , then $Magnetic field = \frac{μ _{0} 2 I}{2 R} = 2 B$ So, resultant magnetic field $= B^{2} + (2 B)^{2} = 5 B^{2} = 5 B = \frac{μ _{0} I 5}{2 R}$

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

⏱ 2mℹ️ Source: PYQ_2012

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