Physics - Magnetism Question with Solution | TestHub

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

PhysicsEasysingle choice

Two long parallel conductors are placed at right angles to a metre scale at the $2 cm$ and $6 cm$ marks as shown in the figure

They carry currents of $1 A$ and $3 A$ respectively. They will produce zero magnetic field at (ignore earth's magnetic field)

Options:

Answer:

Solution:

Here, $x$ is the distance from the $2 cm$ mark.

$\begin{array}{l} \frac{μ_{o} I_{1}}{2 π x} = \frac{μ_{o} I_{2}}{2 π (4 - x)} \\ (4 - x) \times 1 = x \times 3 \\ 4 - x = 3 x \\ 4 = 4 x \Rightarrow x = 1 \end{array}$

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

⏱ 2mℹ️ Source: PYQ_2020

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