pwdi ang ohms Law dyan...I=V / R...Amper yan..
power =VI..watts yan.
ex..12 Volts..I=4 Amps....Time = 6 hours
Power = 12 x 4
Power = 48 watts. conversion...1KW=1000 Watts
Energy = KWHr
Meaning..Power in KW multiply by time consumed in Hour..
48 watts convert to KW...by deviding 1000 watts...
to make in Energy we multiply the 0.048 KW to 6 hours..
answer is 0.288 KW-HR or Energy..
this is your guide tambokoy..!to get the power and the ampacity of your sterio.etc.
P=I squared *Resistance in ohms.
I=amper rateing yan in symbol (A)
sa batery nka label naman ceguro yung ampacity dyan.pag nka label makuha mo na yung power nang batery using sa Ohms LAW..