Question

A circuit consists of a 215-Ω resistor and a 0.200-H inductor. These two elements are connected in series across a generator that has a frequency of 120 Hz and a voltage of 235 V.

(a) What is the current in the circuit?

???A

(b) Determine the phase angle between the current and the voltage
of the generator.

???°

Answer #1

Given, resistor R = 215 Ω

inductor L = 0.2 H

frequency f = 120 Hz

the maximum voltage V = 235 V

(a) The impedance in the circuit

Z = √ R^2 +XL^2

= √ (215)^2 + (2πf L)^2

= 262.61 Ω

therefore the current I = V/Z = 235 / 262.61 = **0.895
A**

(b) The phase angle

φ = tan^-1( XL/R) = **35.04 deg**

**Please rate my answer, good luck...**

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