Answer:
The current supplies the maximum wattage is 6 Ampere.
Step-by-step explanation:
Given : In a 120-volt circuit having a resistance of 10 ohms, the power W in watts when a current I is flowing through is given by
To find : What current supplies the maximum wattage?
Solution :
The equation of power is
Derivate w.r.t x,
For critical point put it to zero,
Now, again derivate w.r.t I,
It is maximum at I=6 A
Therefore, the current supplies the maximum wattage is 6 Ampere.