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17.9 Energy density
u= Uvol= 1/2 CV^2/VOL
= 1/2 EoA/d (v^2/vol)
1/2 Eo A/d (Ed/ Ad)
Alternatinv Current-chapter 18
P=Irms Vrms= Ipeak/ square root of 2 Vrms
= square rt of 2 (P)/vRMS
: P=1/2 Io^2 R= l^2rmsR
:P=1/2 Vo^2/R= V^2rms/R
: Vo=square rt 2 (Vrms)
Alternating Currents Chapter 18; I^2
=1/2 Io^2 and V^2=1/2 Vo^2
Irms= square route of I-> Io/square root of 2
Vrms-> Square root of V-> Vo/Square root of 2
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