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ALLEN 31-8-14 QNo. 29

ALLEN 31-8-14 QNo. 29

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Grade:12th pass

1 Answers

Abhishek Kumar
askIITians Faculty 255 Points
9 years ago
P = VI
So, 0.45 = (1.5)2/R
Calculate Resistance of bulb.
Now, Potential drop across R = 1.5 V
So, 4.5 V across 3 ohm, which means current is 1.5 A.
Now find R as current through bulb is known, hence through R. and then calculate R.
Find the resultant.

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