# Impedance Problem

## Homework Statement

A circuit consists of a 50nF capacitor in series with a 47kΩ resistor. An AC voltage of 120Vrms at
350Hz is applied to the circuit.

(a) Determine the current flowing through the circuit.
(b) Sketch the impedance diagram for the circuit at this frequency.

## Homework Equations

Xc , diagram , V = IZ

## The Attempt at a Solution

First i found Xc = 1/2* pi* f * C

Then i did impedence diagram to find z and then use V = IZ to find Z

But why it says answer is : 3.545sin(700π+11^0)mA ????

ehild
Homework Helper

## Homework Statement

A circuit consists of a 50nF capacitor in series with a 47kΩ resistor. An AC voltage of 120Vrms at
350Hz is applied to the circuit.

(a) Determine the current flowing through the circuit.
(b) Sketch the impedance diagram for the circuit at this frequency.

## Homework Equations

Xc , diagram , V = IZ

## The Attempt at a Solution

First i found Xc = 1/2* pi* f * C

That is wrong. Check your lecture notes or books.

ehild

That is wrong. Check your lecture notes or books.

ehild

isnt it Xc = 1/ angular freq.* C ??

ehild
Homework Helper
isnt it Xc = 1/ angular freq.* C ??

Xc = 1/ angular freq.* C means 1/angular frequency, multiplied by C. Use parentheses: Xc=-1/(ωC) and do not forget, that Xc is negative.