A circuit consists of a 171 - resistor and a 0.158-H inductor. These two elements are connected in series across a generator that has a frequency of 147 Hz and a voltage of 278 V. (a) What is the current in the circuit? (b) Determine the phase angle between the current and the voltage of the generator

Question

Preston Watson

Physics

26 March, 05:18

A circuit consists of a 171 - resistor and a 0.158-H inductor. These two elements are connected in series across a generator that has a frequency of 147 Hz and a voltage of 278 V. (a) What is the current in the circuit? (b) Determine the phase angle between the current and the voltage of the generator

+1

Answers (1)

Know the Answer?

Azul Barker · Answer 1

a) I = 1.635-i0.0021 b) ∅ = - 0.074

Explanation:

a) reactive impeadance = 2πfL

=2 (3.14) (147) (0.158)

=145.86 Ω

Z = 171+j145.86

I=V/Z

I=278 / (171+j145.86)

I = 1.635-i0.0021

b) ∅=inv. tan (-0.0021/1.635)

∅=-0.074