Physics - Magnetism Question with Solution | TestHub

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

PhysicsEasysingle choice

Three semi-infinite wires, each carrying a current of $1 A$ are placed on each of the coordinate axes with their ends at the origin, as shown in the figure. The magnetic induction at point $P (- 2 m, 0, 0)$ is

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Answer:

Solution:

There is no magnetic field at $P$ due to wire in $x$ -axis ${\vec{B}}_{P} (d u e t o w i r e i n y - a x i s) = \frac{μ_{0} I}{4 π a} \hat{k}$

${\vec{B}}_{P} (d u e t o w i r e i n z - a x i s) \frac{μ_{0} I}{4 π a} (- \hat{j})$

$∴ {\vec{B}}_{P} = \frac{μ_{0} I}{4 π a} (- \hat{j} + \hat{k})$

$= \frac{μ_{0} I}{8 π} (- \hat{j} + \hat{k}) = \frac{μ_{0}}{8 π} (- \hat{j} + \hat{k})$

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

⏱ 2mℹ️ Source: PYQ_2020

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