The value of current in the 6 Ω resistance is:

Open MARKS Web Download App

Search any question & find its solution

Question: Answered & Verified by Expert

The value of current in the $6 Ω$ resistance is:

PhysicsCurrent ElectricityJEE MainJEE Main 2021 (20 Jul Shift 1)

Options:

A $4 A$
B $8 A$
C $10 A$
D $6 A$

Solution:

1416 Upvotes Verified Answer

The correct answer is:

10 A

Applying $K C L$ at point $P,$

$\frac{V - 0}{6} + \frac{V - 90}{5} + \frac{V - 140}{20} = 0$
$\Rightarrow 10 V + 12 V - 1080 + 3 V - 420 = 0$
$\Rightarrow V = 60$
$∴$ Current in $6 Ω = \frac{V - 0}{6} = 10 A$
Hence, option $3 .$

Looking for more such questions to practice?

Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.

Use on iOS or Desktop Download from Google Play