Example 1 · difficulty 4/5
An ideal transformer has 100 turns in its primary and 500 turns in its secondary. When the secondary delivers a current of 2 A, the current drawn from the 40 V primary supply is:
- A. 0.4 A
- B. 2 A
- C. 50 A
- D. 10 A
2018 source guide · Physics
NEET 2018 Physics Alternating Current Questions
Connect the official 2018 paper with current Physics practice without labelling original previews as PYQs.
200 original questions · explicit provenance labels
PhysicsPlate 72
NeetVellum atlas · fig. physics
72
What to master
phasors, reactance, impedance, resonance, power and transformers.
Original practice preview
These are current-syllabus NeetVellum questions, shown separately from historical-paper provenance.
Example 2 · difficulty 3/5
An AC voltage is given by v = v₀ sin(ωt), where T = 2π/ω is the time period. Starting from t = 0, the earliest instant at which the instantaneous voltage equals its own rms value is:
- A. T/4
- B. T/8
- C. T/2
- D. T/16
Example 3 · difficulty 3/5
An alternating voltage is represented by v = 100 sin(ωt). If it first reaches its positive maximum after 0.01 s from a zero crossing with positive slope, the angular frequency is:
- A. 50π rad s⁻¹
- B. 25π rad s⁻¹
- C. 100π rad s⁻¹
- D. 50 rad s⁻¹
The evidence-first practice loop
- 1. Verify provenanceOfficial paper and final key before accepting a PYQ label.
- 2. Attempt closed-bookExpose the concept or execution gap before rereading.
- 3. Repair and returnClassify the miss and re-practice after a delay.
Canonical chapter practice
Frequently asked questions
Are these official NEET 2018 Physics Alternating Current PYQs?
No. The previews are original NeetVellum practice questions. A historical item receives a PYQ label only after its official paper and authoritative final answer key are attached. Use the official archive for the source paper.
How should I use the NEET 2018 paper?
Solve the official paper under its original timing, verify against the final key, classify every miss, and then use the linked current-syllabus practice bank to repair the exposed concept.