A voltage source with Thevenin parameters vTt 5 sin 1000t V and RT 25 V

A voltage source with Thevenin parameters vTðtÞ ¼

5 sin 1000t V and RT ¼ 25 V drives the primary winding of an ideal transformer with n ¼ 2. Write an expression for the instantaneous power delivered to a 300-V load connected across the secondary winding.