NCERT - Science

Book: NCERT - Science

Chapter: 12. Electricity

Subject: Physics - Class 10th

Q. No. 2 of In Text Questions-Pg-218

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Compute the heat generated while transferring 96000 coulombs of charge in one hour through a potential difference of 50 V.

First of all we will calculate the current (I) by using the given values of charge (Q) and time (t). We know that:

Current


We will now calculate the resistance by using Ohm's law:


Resistance, = 1.87


And, Time, t= 1h = 60x60s = 3600 s


Heat generated, H=


=


= 4788397J


= or


Thus, the heat generated is 4.8 x 106 joules.


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