A resistor with R = 300 Ω and an inductor are connected in series across an ac source that has voltage amplitude 500 V. The rate at which electrical energy is dissipated in the resistor is 296 W Part A

What is the impedance Z of the circuit?

Express your answer to three significant figures and include the appropriate units.

Part B

What is the amplitude of the voltage across the inductor?

Express your answer to three significant figures and include the appropriate units

Part C

What is the power factor?

Express your answer using three significant figures.

Question

Physics

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15 September, 15:35

A resistor with R = 300 Ω and an inductor are connected in series across an ac source that has voltage amplitude 500 V. The rate at which electrical energy is dissipated in the resistor is 296 W Part A

What is the impedance Z of the circuit?

Express your answer to three significant figures and include the appropriate units.

Part B

What is the amplitude of the voltage across the inductor?

Express your answer to three significant figures and include the appropriate units

Part C

What is the power factor?

Express your answer using three significant figures.

+5

Answers (1)

Know the Answer?

Leon Mcintosh · Answer 1

Rate of dissipation of energy at resistor

= I² R = 296

current I² = 296/R = 296 / 300

I = 0.9933 A.

Impedence Z = V / I = 500 /.9933

= 503 ohm.

B) Let it be V

voltage across resistance = 300 x. 9933 = 298 v

Now 500² = 298² + V²

V = 401 v

C) Power factor = R / Z

=300 / 503

= 0.596