A) frequency of the AC source is decreased
B) number of turns in the coil is reduced
C) a capacitance of reactance \[{{X}_{C}}={{X}_{L}}\]is included in the same circuit
D) an iron rod is inserted in the coil
Correct Answer: D
Solution :
As \[Z=\sqrt{{{R}^{2}}\times X_{L}^{2}}=\sqrt{{{R}^{2}}+{{(2\pi fvL)}^{2}}}\]
You need to login to perform this action.
You will be redirected in
3 sec
