clear//

//Variables

I = 0.3    //Current (in Ampere)
W = 9.45   //Heat (in Joules)
t = 5      //Time (in seconds)

//Calculation

Q = I * t
V = W/Q    //Voltage (in Volts)

//Result

printf("\n The voltage across filament is  %0.3f  volts.",V)