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.
Provide a better Answer & Earn Cool Goodies
LIVE ONLINE CLASSES
Prepraring for the competition made easy just by live online class.
Full Live Access
Study Material
Live Doubts Solving
Daily Class Assignments
Ask a Doubt
Get your questions answered by the expert for free