Calculate the total impedance and current for a series RL circuit with R = 25 , L = 0.2 H, and V = 20 V at 5 kHz.

Here are the solutions to the questions.

2.1 Calculations

Given:
Resistance of coil ($R$) = $25 \, \Omega$
Inductance of coil ($L$) = $0.2 \, \text{H}$
Supply voltage ($V$) = $20 \, \text{V}$
Supply frequency ($f$) = $5 \, \text{kHz} = 5000 \, \text{Hz}$

First, calculate the angular frequency ($\omega$) and inductive reactance ($X_L$).

$$\omega = 2\pi f = 2\pi (5000 \, \text{Hz}) = 10000\pi \, \text{rad/s}$$ $$$$