Learn

Friday, 9 October

JEE Main 2022 · PhysicsNumerical answerNumerical valueEasyCalculation

JEE Main 29 June 2022, Shift 1, Physics Q51

Question 51 of 90 in this shift, Physics question 21 of 30, Section B.

Two coils require 20 minutes and 60 minutes respectively to produce same amount of heat energy when connected separately to the same source. If they are connected in parallel arrangement to the same source; the time required to produce same amount of heat by the combination of coils, will be ____________ min.

Official answer

15

NTA final key (2022 Session 1).

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
  1. 4 Apr 2025, Shift 2 · Q36There are 'n' number of identical electric bulbs, each is designed to draw a power p independently from the mains supply. They are now…EasySingle correct
  2. 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

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.