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CBSE Class 12-science Answered

Power = current square into resistance hence p is directly proportional to r also Power =voltage square upon resistance so p is inversely proportional to r but how power can be both directly and inversely proportional to resistance?
Asked by DIPTI PRIYA | 29 Jan, 2011, 01:46: PM
Expert Answer
Dear student,
 
we dont apply the two formulas simultaneously ...when current is constant we apply p=i^2r ..hence directly proportional..and when potential constant..we apply p=v^2/r..giving inverse relation with r.
hope this helps.
Thanking you
Team
Topperlearning.com
Answered by | 29 Jan, 2011, 03:24: PM
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