An Series Circuit Consists of an Ac Voltage Source, a Resistor

question 169

Short Answer

An series circuit consists of an ac voltage source, a resistor of resistance $810 \Omega$ , and an inductor. (There is no capacitance in the circuit.) The current amplitude is $0.40 \mathrm {~A}$ , and $\mathrm { t }$ phase angle between the source voltage and the current has magnitude $11 ^ { \circ }$ .
(a) Does the source voltage lag or lead the current?
(b) What is the voltage amplitude of the source? he