A parallel plate capacitor made of circular plates is being charged such that the surface charge density on its plates is increasing at a constant rate with time the magnetic field arising due to displacement current is : NEET 2024 PYQ

1. A parallel plate capacitor made of circular plates is being charged such that the surface charge density on its plates is increasing at a constant rate with time. The magnetic field arising due to displacement current is:

(1) Non-zero everywhere with maximum at the imaginary cylindrical surface connecting peripheries of the plates

(2) Zero between the plates and non-zero outside

(3) Zero at all places

(4) Constant between the plates and zero outside the plates

Let the surface charge density be σ = q/A. Given dσ/dt = constant, ⟹ d(q/A)/dt = I/A = constant. It means displacement current is constant. This system acts like a cylindrical wire. The magnetic field (B) varies linearly with radius (r) as shown in the graph.

Magnetic Field in a Charging Capacitor – NEET PYQ Practice

Practicing NEET Previous Year Questions (PYQs) is one of the most effective ways to build conceptual clarity and identify important topics. This question, based on electromagnetic effects in a charging capacitor, is a classic example from NEET that tests your grasp of displacement current and magnetic field concepts.

Such questions often reappear with slight variations, making it crucial to master them. Understanding the logic behind Maxwell’s correction and visualizing field patterns can help students tackle similar MCQs in Electromagnetism. Strengthen your NEET Physics preparation by analyzing PYQs like this one deeply.