Answer:
A. 9 Watts
B. 2.25 Watts
C. 4.5 Watts
Arranging the circuit from lowest power to highest power we have
Circuit B, circuit C, circuit A.
Explanation:
The power in an electric circuit can be obtained by the following equation:
Power (P) = current (I) x voltage (V)
P = IV
With the above equation, let us calculate the power of each circuit. This is illustrated below:
A. Current (I) = 3A
Voltage (V) = 3V
Power (P) =?
P = IV
P = 3 x 3 = 9watts
B. Current (I) = 1.5A
Voltage (V) = 1.5V
Power (P) =?
P = IV
P = 1.5 x 1.5 = 2.25watts
C. Current (I) = 1.5A
Voltage (V) = 3V
Power (P) =?
P = IV
P = 1.5 x 3 = 4.5watts
Arranging the circuit from lowest power to highest power we have
Circuit B, circuit C, circuit A.
