R1=20ohm

R2=40
R3=60
v=120
find Vt,IT,PT

To find the total voltage (Vt), total current (It), and total power (Pt) in the circuit, we can use Ohm's Law and the formulas for series circuits.

Total Resistance (Rt) = R1 + R2 + R3
Rt = 20 + 40 + 60
Rt = 120 ohms

Total Voltage (Vt) = v = 120 V

Total Current (It) = Vt / Rt
It = 120 / 120
It = 1 Amp

Total Power (Pt) = Vt * It
Pt = 120 * 1
Pt = 120 Watts

Therefore, the total voltage, current, and power in the circuit are:
Vt = 120 V
It = 1 Amp
Pt = 120 Watts