Current Electricity and Electrical InstrumentHard
Question
An ac source of angular frequency ω is fed across a resistor R and a capacitor C in series. The current registered is I. If now the frequency of source is changed to ω/3 (but maintaining the same voltage), the current in the circuit is found to be halved. Then the ratio of reactance to resistance at the original frequency ω is :
Options
A.
B.
C.
D.
Topic: Current Electricity and Electrical Instrument·Practice all Current Electricity and Electrical Instrument questions
More Current Electricity and Electrical Instrument Questions
A wire of resistance R is stretched to double its length. It6s new resistance is...At what temperature will the resistance of a copper wire become three times its value at 0o C [Temperature coefficient o...Potentiometer wire length is 10 m, having a total resistance of 10Ω. If a battery of emf 2 volt (negligible interna...The electric field ′E′ is uniform in the shaded area and makes an angle θ with the normal. The conducti...If X, Y and Z in figure are identical lamps, which of the following changes to the brightness of the lamps occur when sw...