Question 107: AC fundamentals

Question

A sinusoidal voltage V(t) = 210 sin 3000 t volt is applied to a series LCR circuit in which L = 10 mH, C = 25 $$\mu$$F and R = 100 $$\Omega$$. The phase difference ($$\Phi $$) between the applied voltage and resultant current will be :

Accepted Answer

$${X_L} = 3000 	imes 10 	imes {10^{ - 3}} = 30\,\Omega $$
$${X_C} = {1 \over {3000 	imes 25}} 	imes {10^6} = {{40} \over 3}\,\Omega $$
So $${X_L} - {X_C} = 30 - {{40} \over 3} = {{50} \over 3}\,\Omega $$
$$	an 	heta  = {{{X_L} - {X_C}} \over R} = {{50/3} \over {100}} = {1 \over 6}$$
So $$	heta  = {	an ^{ - 1}}(0.17)$$

Answer

tan
$$-$$1
(0.17)

Answer

tan
$$-$$1
(9.46)

Answer

tan
$$-$$1
(0.30)

Answer

tan
$$-$$1
(13.33)

AC fundamentals

A sinusoidal voltage V(t) = 210 sin 3000 t volt is applied to a series LCR circuit in which L = 10 mH, C = 25 $\muF and R = 100 \Omega. The phase difference (\Phi $) between the applied voltage and resultant current will be :

Choose the correct answer: