ElectroMagnetic InductionHard
Question
In a circuit L, C and R are connected in series with an alternating voltage source of frequency f. The current leads the voltage by 45o. The value of C is : -
Options
A.
B.
C.
D.
Solution
tan 45o =
⇒ R =
= 2πfL

⇒ R + 2πfL =
⇒C = 

⇒ R + 2πfL =
Create a free account to view solution
View Solution FreeMore ElectroMagnetic Induction Questions
Loop A of radius (r < < R) moves towards loop B with a constant velocity V in such a way that their planes are alw...The radius of the circular conducting loop shown in figure is R. Magnetic field is decreasing at a constant rate a. Resi...A conducting wheel in which there are four rods of length l as shown in figure is rotating with angular velocity ω ...A constant current i maintained in a solenoid. Which of the following quantities will increase if an iron rod is inserte...A transformer having efficiency of 90% is working on 200 V and 3 kW power supply. If the current in the secondary coil i...