9 - Alternating Current Questions Answers

$$\begin{gathered} X_C=50\Omega and X_L=100\Omega are in parallel. \\ Resul\tan t is 100\Omega capaci\tan ce. \\ Now 100\Omega capaci\tan ce and 100\Omega induc\tan ce give reac\tan ce 0\Omega \\ and resis\tan ce is 100\Omega . So only option D is correct. \end{gathered}$$

Write the question with correct symbols

yes it is equivalent to resistance for that circuit

chock coil in ac is the device equivalent to rheostat in dc, so it is used to increase current.

1st make a 3 line circuit in which ac source, resistor with an inductor and resistor with a capacitor will be there in the three lines then divide total  current "I"

from AC into the two legs, equations will be 

e = L di₁/dt + i₁R  (1)

e =q₂ / C + i₂ R     (2)                                        here dq₂ / dt = i₂

now solve