As shown in the figure, two infinitely long, identical wires are bent by 90° and placed in such a way that the segments LP and QM are along the x-axis, while segments PS and QN are parallel to the y-axis. If OP = OQ = 4cm, and the magnitude of the magnetic field at O is 10–4 T, and the two wires carry equal currents (see figure), the magnitude of the current in each wire and the direction of the magnetic field at O will be (µ0 = 4π × 10–7 NA

Engineering

Physics

Magnetization and Magnetic Intensity

Question

As shown in the figure, two infinitely long, identical wires are bent by 90° and placed in such a way that the segments LP and QM are along the x-axis, while segments PS and QN are parallel to the y-axis. If OP = OQ = 4cm, and the magnitude of the magnetic field at O is 10^–4 T, and the two wires carry equal currents (see figure), the magnitude of the current in each wire and the direction of the magnetic field at O will be (µ₀ = 4π × 10^–7 NA^–2) :

20 A, perpendicular into the page

40A, perpendicular into the page

20 A, perpendicular out of the page

40A, perpendicular out of the page

LiveFree JEE Main Previous Year Online Papers Live Free JEE Advance Previous Year Online Papers

College PredictorLive

Know your College Admission Chances Based on your Rank/Percentile, Category and Home State.

Get your JEE Main Personalised Report with Top Predicted Colleges in JoSA

$B = 2 [\frac{μ_{0} i}{4 nd} ({cosθ}_{1} - {cosθ}_{2})]$

B = 10^–4 θ₁ = 90°

µ₀ = 4π × 10^–7 θ₂ = 180°

d = 4 × 10^–2

⇒ i = 20 A (into the page)