there are these 2 questions that i can't find the answers for:
a) In a dc circuit, the power is the product of voltage and current. this relationship does not always apply to effective values in an ac circuit. explain why.
b) in a dc circuit, ir the current and resistance are known, power (I²R) can be determined. this also applies in ac circuit. explain why.
thanks loads
a) In a dc circuit, the power is the product of voltage and current. this relationship does not always apply to effective values in an ac circuit. explain why.
b) in a dc circuit, ir the current and resistance are known, power (I²R) can be determined. this also applies in ac circuit. explain why.
thanks loads