JEE Main 2025 · PhysicsMultiple choiceSingle correctEasyApplication

JEE Main 4 April 2025, Shift 2, Physics Q36

Question 36 of 75 in this shift, Physics question 11 of 25, Section A.

There are 'n' number of identical electric bulbs, each is designed to draw a power p independently from the mains supply. They are now joined in series across the mains supply. The total power drawn by the combination is :

(1) $p$
(2) $\frac{p}{n}$ Official answer
(3) $np$
(4) $\frac{p}{n^2}$

Official answer

Option 2

NTA final key.

Chapter: Current Electricity
Topic: Ohm's Law and Resistance
Idea tested: Power Dissipation Ratios in Series vs Parallel

Same idea in other shifts

Asked 3× in all

11 Apr 2023, Shift 1 · Q40Two identical heater filaments are connected first in parallel and then in series. At the same applied voltage, the ratio of heat produced…EasySingle correct
29 Jun 2022, Shift 1 · Q51Two coils require 20 minutes and 60 minutes respectively to produce same amount of heat energy when connected separately to the same…EasyNumerical value

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 42 of the 174 JEE Main shifts held from 2017 to 2026.