Answer:
the current through 30 ohms resistor is 30 A.
Explanation:
Given;
resistor, R₁ = 10 ohms
resistor, R₂ = 30 ohms
voltage of the source = 120 V
The effective resistance, Rt = 30 ohms + 10 ohms = 40 ohms
The current through 30 ohms resistor is the same as the current through 10 ohms resistor because they are connected in series.
Appy ohms law to determine the currecnt through 30 ohms resistor;
I = V / Rt
I = 120 / 40
I = 3 A
Therefore, the current through 30 ohms resistor is 30 A.