JEE Main 2026 · PhysicsMultiple choiceSingle correctEasyCalculation

JEE Main 5 April 2026, Shift 2, Physics Q27

Question 27 of 75 in this shift, Physics question 2 of 25, Section A.

In 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 A, respectively. The least counts of voltmeter and ammeter are 500 mV and 200 mA, respectively. The estimated error in the resistance measurement is __________

\Omega

(1) $0.25$
(2) $2$
(3) $2.5$
(4) $0.18$ Official answer

Official answer

Option 4

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 7× in all

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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.