An AC voltage source given by v = 10 (ω t) V is connected in series...

The resultant voltage across the load is the sum of the DC and AC components: $V(t) = 15 + 10 \sin(\omega t)$.

The maximum value of this voltage is $15 + 10 = 25\text{ V}$ and the minimum value is $15 - 10 = 5\text{ V}$.

Since the minimum voltage is positive ($+5\text{ V}$), the resultant voltage never crosses zero and never reverses its polarity. An alternating voltage must periodically reverse its direction. Because this voltage remains unidirectional but varies in magnitude, it is classified as a pulsating DC voltage.

Answer: Pulsating DC voltage