A sinusoidal voltage of frequency 60 Hz and peak value 150 V is applied to a series L-R circuit, where `R=20Omega` and L=40 mH.
a) Compute T, `omega, XL

Explanation

To solve the problem step by step, we will compute the period (T), angular frequency (ω), and inductive reactance (X_L) for the given series L-R circuit.

### Step 1: Compute the Period (T)
The period (T) is the reciprocal of the frequency (f). The formula is:
\[ T = \frac{1}{f} \]
Given that the frequency \( f = 60 \, \text{Hz} \):
\[ T = \frac{1}{60} \]
\[ T = 0.01667 \, \text{seconds} \]
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