Answer:
0.6 A
Step-by-step explanation:
Applying,
I = E/(R'+r).................... Equation 1
Where I = curent or circuit supply, R'= equivalent external resistance, r = internal resistance.
From the question,
Given: E = 12 Volt,
IF the three resistors are connected in series, R' = (3+7+10) ohm = 20 ohm,
r = neglible.
Substitute these values into equation 1
I = 12/(20)
I = 0.6 A