RLC Circuit current source

Question

Answer 1

(a)

Observe the circuit:

The input current is

Compare the function with .

Here .

Find the total impedance.

and are in parallel.

is in series with .

.

can be written in polar form as .

Answer 2

(b)

The input current is

Compare the function with .

in polar form can be written as .

The input current can be written as

Find the voltage across the resistor.

Voltage across the resistor is