As long as you use RMS values of the alternating voltage.
ie. If voltage source is (say) 250V RMS then using a 125 Ohm resistor > I = 250/125 = 2 amps
The peak value of the supply is 250 x 2^1/2 ~ 353V.
Generally speaking the resistance of a resistor is independent of frequency.
Yes, for resistive circuits, if you use RMS voltage and current.
However, for caps and inductors, you must use special math. And ordinary resistors have a inductive and capacitive element that becomes important as frequency increases.
Yes, but if there are also reactive components in the circuit, the complex impedances must be used.
BECAUSE OHM'S LAW AND WATT'S LAW ARE UNCHANGED NO MATTER ITS POWER SOURCE IN DC OR AC. JUST CHANGE THE UNITS LIKE RESISTANCE INTO IMPEDANCE.
Can the same circuit analysis technique used for resistive circuits with DC sources be used when the sources are sinusoidal? why?
