"first ; we must find the electric current:"first ; we must find the electric current: "I=Electric current"I=Electric current Delta Q":charge" Delta "t:time" I=(Delta Q)/(Delta t) I=15/12=5/4" A" P:Power "R:Resistance of circuit" "The Electric power is given as formula:" P=I^2*R 14=(5/4)^2*R 14=25/16*R R=(14*16)/25 R=8,96 " Ohm"