Physics Alternating Current ETEA 2015
PMDC Verified Question 113 of 127
The current which is produced due to changing electric flux is called:
A
Displacement current
B
Conduction current
C
Eddy current
D
None of these
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: Displacement current
Concept:

Maxwell introduced displacement current to account for time-varying electric fields producing magnetic fields, ensuring Ampere's Law satisfies charge conservation.

Formula / Reaction:

$$I_D = \varepsilon_0 \frac{d\Phi_E}{dt}$$

Solution:

  • The rate of change of electric flux between capacitor plates produces a displacement current \(I_D\) that generates a magnetic field just like a conduction current.


Why other options are incorrect:

  • Opt_B: Conduction current is the actual drift of physical charges through a conductor (\(I = dq/dt\)).


  • Opt_C: Eddy currents are closed loops of induced conduction current circulating inside bulk conductors.


  • Opt_D: Option A is correct.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

Previous Question All Alternating Current MCQs Next Question

Want to solve full-length papers under timed exam conditions?

Practice with zero-scroll lockdown sprints, dynamic latency zone timers, live peer selection telemetry, and the automated Amber mistake recovery loop.

Enter Arena Sprint iOS App Android App