Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 12-science Answered

an alternating potential V=Vo sinomegat is applied across a circuit .as a result the current I=Io sin(omegat-straight pi/2) flow in it.the power consumed in the circuit per cycle is?(ans.zero)blank subscript blankblank subscript blank
Asked by Nidhi | 30 Dec, 2014, 11:54: PM
answered-by-expert Expert Answer
The power consumed per cycle is given by:
 
begin mathsize 14px style straight P space equals space straight V space straight I space cos space straight ϕ where space straight ϕ space is space the space phase space angle space between space the space voltage space and space the space current. Here space the space current space lags space behind space the space applied space potential space by space straight pi over 2 open square brackets Given space that space straight V equals straight V subscript 0 space sin space ωt space and space straight I space equals straight I subscript 0 space sin space left parenthesis ωt space minus straight pi over 2 right parenthesis space close square brackets In space this space case space the space phase space angle space between space straight V space and space straight I space is space straight pi over 2 straight P space equals straight V space straight I space cos open parentheses straight pi over 2 close parentheses rightwards double arrow straight P space equals 0 space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space open square brackets As space cos open parentheses straight pi over 2 close parentheses space equals 0 close square brackets   end style
Therefore the power dissipated or consumed in the circuit per cycle is zero.
Answered by Jyothi Nair | 31 Dec, 2014, 09:09: AM
CBSE 12-science - Physics
Asked by arjunsah797 | 27 Mar, 2022, 08:00: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by saivardhanreddy15022003 | 11 Mar, 2022, 06:47: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by rishicool0205 | 19 Aug, 2020, 02:20: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by rajneetverma11 | 16 Feb, 2020, 04:42: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by Topperlearning User | 22 Jun, 2015, 10:57: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by Topperlearning User | 22 Jun, 2015, 10:57: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 12-science - Physics
Asked by Topperlearning User | 22 Jun, 2015, 10:58: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
Get Latest Study Material for Academic year 24-25 Click here
×