JEE Main 2015PhysicsCurrent ElectricityEasyMCQ

JEE Main 2015 — Current Electricity Question with Solution

JEE Main 2015 (10 Apr Online)

Question

A 10 V battery with internal resistance 1 Ω and a 15 V battery with internal resistance 0.6 Ω are connected in parallel to a voltmeter (see figure). The reading in the voltmeter will be close to:

Choose an option

Show full solutionCorrect option: B
Correct answer
B13.1 V

Step-by-step explanation



The equivalent emf of the battery parallel combination is given as

Equation = E1r1  + E2r21r1 + 1r2

= 101 + 150.61 1 + 1 0.6= 10+ 15061+ 106 

=1058

=13.1 V

∴    The reading measured by voltmeter =13.1 V

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About this question

This is a previous-year question from JEE Main 2015, covering the Current Electricity chapter of Physics. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.