Physics - Magnetism Question with Solution | TestHub

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

PhysicsEasysingle choice

A horizontal overhead powerline is at height of $4 m$ from the ground and carries a current of $100 A$ from east to west. The magnetic field directly below it on the ground is $(μ_{0} = 4 π \times 1 0^{- 7} Tm A^{- 1})$

Options:

Answer:

Solution:

The magnetic field is $B = \frac{μ _{0}}{4 π} \frac{2 I}{r} = 1 0^{- 7} \times \frac{2 \times 100}{4} = 5 \times 1 0^{- 6} T$
According to right hand palm rule, the magnetic field is directed towards south.

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

⏱ 2mℹ️ Source: PYQ_2012

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