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
Concept Videos
-
Electric Current
This video explains the concept of electric current. -
Drift of Electrons - Part 1
This video explain the drift speed and its dependence on the externally app... -
Compare the resistivity of conductors, insulators and s ...
Compare the resistivity of conductors, insulators and semiconductors. Study... -
About emf, potential difference & internal resistan ...
Define emf, potential difference & internal resistance. Identify factors on... -
Combination of Cells - Part 1
This video describes about the working of cells in series combination.
CBSE 12-science - Physics
Asked by mailtoanjalip2005 | 16 Mar, 2024, 08:22: PM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by patelnamra608 | 26 Jan, 2024, 11:01: AM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by smitdholakiya28 | 17 Dec, 2023, 09:37: AM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by shivashikhar69 | 09 Dec, 2023, 02:27: PM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by nikhilsai2616 | 19 Nov, 2023, 01:05: AM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by snehashiragannavar773 | 21 Oct, 2023, 02:38: PM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by dr.strange45678 | 02 Aug, 2023, 12:31: PM
ANSWERED BY EXPERTCBSE 12-science - Physics
Asked by komalbrar0987 | 17 May, 2023, 06:15: PM
ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by amanpanday6384 | 22 Dec, 2022, 12:42: PM
ANSWERED BY EXPERT
