List of top Physics Questions on Magnetic Field due to a Current Element

Magnetic field due to long wire along y-axis carrying current in -y direction at (50 cm,0,0) points along

Magnetic field due to long wire along y-axis carrying current in -y direction at (50 cm,0,0) points along

दो अनन्त लंबाई के समान्तर चालक तार A और B, क्रमशः \(I\) और \(2I\) धारा वहन करते हैं जो \(x\) दिशा में हैं। एक इकाई लंबाई का द्रव्यमान \(\lambda\) वाला एक पतला तार \(C\) एक विद्युत-रोधी/विरोधित पदार्थ से तार B के ऊपर की ओर \(R\) की ऊँचाई पर स्थिर रखा गया है। तो न्यूनतम चुम्बकीय क्षेत्र पर तार A पर लगने वाले कुल बल को संतुलित रखने हेतु \(\mu_0\) निर्वात की चुंबकशीलता है।

The figure given below shows a long straight solid wire of circular cross-section of radius ‘a’ carrying steady current I. The current I is uniformly distributed across its cross-section. The plot which correctly represents the variation of magnetic field (B) with distance (r) from the axis of the conductor in the region is: ____.

The magnetic field at the center of a circular current carrying loop depends on:

A long solenoid of diameter 0.1 m has 2 × 10⁴ turns per meter. At the centre of the solenoid, a coil of 100 turns and radius 0.01 m is placed with its axis coinciding with the solenoid axis. The current in the solenoid reduces at a constant rate to 0 A from 4 A in 0.05 s. If the resistance of the coil is 10π² Ω, the total charge flowing through the coil during this time is