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Aodian:
can anyone post all the equations needed only for electricity, tranformers, CRO n pretty much anything to do with the electrical thingies.. I've wasted so much time trying to hunt down all those formulaes and equations in my books.. -.-'' thanks for the help in advance

MaNa:
V= IR
P=VI
I= Charge/time
E=IV
Vs/Vp=Ns/Np where ( Vs= secondary output voltage
                               Vp= Primary inpu voltage
                               Ns number of tumrns in secondary coil
                               Np number of turns in primary coil)
IpVp=IsVs  (where Vp n Vs are same as above BUT Ip is Cureent in priamry coil Is is curent in secondary coil)
Power(loss) I^2 *R

 

Shogun:
to find current,charge,time  interms of  charge ,current,time:
to find current (I)= charge(Q)/time(t)
to find charge (Q)= current (I) x time (t)
to find time (t)=  charge (q) / currebt (I)

to find resistance,voltage,current interms of resistance,voltage or current:
to find current (I)= voltage (v)/ resistance (R)
to find voltage(V)= Current(I) x rsistance (R)
to find resistance (R)= voltage (v) / Current (I)

formulas got to do with power and energy(workdone):
to find the power(p): voltage (v) x Current (I)   (the unit of power is watts)

to find the loss power: square of current x  resistance (I^2 x R)

to find energy(E) which is also workdone: voltage (v) x Current (I) x Time (t)    
                                               OR    
                                     power(p) x time(t) (unit of is joules)


formulas of transformer:
to find number of turns in secondary or primary coils OR the secondary or primary voltage:

 secondary voltge (Vs)        number of turns of secondary (Ns)
----------------------  =   ----------------------------------
 Primary voltage (Vp)           number of turns of primary (Np)


to find voltage or current in an 100% efficient trnasformer=

voltage in primary(Vp) x current in primary(Ip)  =    voltage in secondary(Vs) x current in secondary(Is)
                                                           OR
               power in primary = power in secondary (cuz voltage(V) x current (I)= power)

more resistance formula:
to find total resistance aranged in SERIES : just add all resistance (R1+R2+R3),etc
to find tpatal resistance where resistors are arange in parallel : just add 1/r
      (1/R1  + 1/R2  + 1/R3 = 1/R) etc then at the end reverse it by making  1/R to  R/1 to get (R) resistance

and no formulas for CRO

well thts all i guess
any confusion or help u need just ask me

Aodian:
Thanx a lot Manah and Shogun!

MaNa:

--- Quote from: Aodian on May 26, 2009, 11:59:39 am ---Thanx a lot Manah and Shogun!

--- End quote ---
No problem but dont forget + rep  ;)

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