V = Voltage in the circuit = 24 Volts
i = Current flowing in the circuit = 2 A
P = Total power dissipated in the circuit.
Total Power dissipated in a current carrying circuit is given as
P = i V
inserting the above values of the current and voltage in the above equation , we get
P = (2 A) (24 V)
P = (2 x 24) (AV)
P = 48 Watt (Since Ampere -Volt = watt)