JEE Main 2024 · PhysicsNumerical answerNumerical valueMediumMulti-step

JEE Main 6 April 2024, Shift 1, Physics Q55

Question 55 of 90 in this shift, Physics question 25 of 30, Section B.

When a

dc

voltage of 100V is applied to an inductor, a

dc

current of 5A flows through it. When an

ac

voltage of 200V peak value is connected to inductor, its inductive reactance is found to be

20\sqrt{3}\Omega

. The power dissipated in the circuit is _________

W

Official answer

250

NTA final key.

Chapter: Alternating Current
Topic: Phasor Diagrams
Idea tested: Real Inductor (Choke Coil) Phasors

Same idea in other shifts

Asked 4× in all

9 Apr 2024, Shift 1 · Q58When a coil is connected across a $20$ V dc supply, it draws a current of $5$ A. When it is connected across $20$ V, $50$ Hz ac supply, it…MediumNumerical value
4 Aug 2021, Shift 2 · Q5A choke coil is needed to operate an arc lamp at 160 V (rms) and 50 Hz. The arc lamp has an effective resistance of $5\Omega$ when running…MediumSingle correct
2 Sep 2020, Shift 2 · Q14An inductance coil has a reactance of 100 $\Omega$ . When an AC signal of frequency 1000 Hz is applied to the coil, the applied voltage…MediumSingle correct

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.