Request a call back

# 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
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

## Concept Videos

CBSE 12-science - Physics
Asked by whoami230302 | 17 Jan, 2023, 03:48: PM
CBSE 12-science - Physics
Asked by amanpanday6384 | 22 Dec, 2022, 12:42: PM
CBSE 12-science - Physics
Asked by guptakartikgupta2 | 16 Jul, 2022, 05:23: PM
CBSE 12-science - Physics
Asked by marasan082 | 29 May, 2022, 10:19: PM
CBSE 12-science - Physics
Asked by nudratnigar | 10 May, 2022, 12:02: PM
CBSE 12-science - Physics
Asked by deepajinder | 05 May, 2022, 08:33: PM