JEE Main 2023 · PhysicsMultiple choiceSingle correctMediumCalculation

JEE Main 6 April 2023, Shift 1, Physics Q46

Question 46 of 90 in this shift, Physics question 16 of 30, Section A.

Two resistances are given as

R_1=(10\pm0.5)\,\Omega

and

R_2=(15\pm0.5)\,\Omega

. The percentage error in the measurement of equivalent resistance when they are connected in parallel is -

(1)4.33Official answer
(2)6.33
(3)2.33
(4)5.33

Official answer

Option 1

NTA final key.

Chapter: Units and Measurements
Topic: Ohm's Law and Resistance
Idea tested: Error Analysis in Ohm's Law

Same idea in other shifts

Asked 3× in all

5 Apr 2026, Shift 2 · Q27In an experiment to determine the resistance of a given wire using Ohm's law, the voltmeter and ammeter readings are noted as 10 V and 5…EasySingle correct
29 Jan 2024, Shift 1 · Q31The resistance $R=\frac{V}{I}$ where $V=(200\pm5)$ V and $I=(20\pm0.2)$ A, the percentage error in the measurement of R is :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.