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Alternating Current

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**Q. **In colpitt the feedback network consists of?

In Colpitt oscillator two capacitors are placed across a common inductor and the center of the two capacitors is tapped.

**Q. **In an ideal choke, ratio of its resistance L to its DC resistance R is?

In an ideal choke, ratio of its inductance L to its DC resistance R is infinity.

**Q. **In a circuit, the current lags behind the voltage by a phase difference of π/2, then circuit will contain which of the following?

When a circuit contains inductance only, then the current lags behind the voltage by the phase difference of π/2 or 90 degree.

While in a purely capacitive circuit, the current leads the voltage by a phase angle of π/2 or 90 degree.

In a purely resistive circuit current is in phase with the applied voltage.

**Q. **In colpitt the feedback network consists of?

In Colpitt oscillator two capacitors are placed across a common inductor and the center of the two capacitors is tapped.

**Q. **An a.c. source is of 120 volt , 60Hz the value of the voltage after 1/360 sec from the start will be?

146.4 Volt

**Q. **Is Alternating Current important for IIT JEE?

Not only Alternating current is an important topic but its difficult as well so its advised by JEE experts that students need to focus more on this chapter especially on circuits and formulae used.

**Q. **What is Alternating Current?

Alternating current can be defined as the current flow which changes its magnitude and direction repeatedly after regular time intervals and flows in one direction.

**Q. **What is the weightage of Alternating current in IIT JEE?

Every year 2 questions are asked from this topic and its weightage is around 6.6%.

**Q. **What are the applications of Alternating Current?

The most common application of AC current is for producing and transporting electricity to businesses and homes.