English

Are Kirchhoff’s laws applicable to both AC and DC currents? - Physics

Advertisements
Advertisements

Question

Are Kirchhoff’s laws applicable to both AC and DC currents?

Short/Brief Note
Advertisements

Solution

Yes, Kirchoff's law states that the algebraic sum of the flow of current into and out of a node must be equal. This is true for all DC circuits, and for AC circuits at frequencies where the wavelengths of electromagnetic radiation are very large compared to the circuits the law is valid.

shaalaa.com
Kirchhoff’s Laws of Electrical Network
  Is there an error in this question or solution?
Chapter 9: Current Electricity - Exercises [Page 228]

APPEARS IN

Balbharati Physics [English] Standard 12 Maharashtra State Board
Chapter 9 Current Electricity
Exercises | Q 2.04 | Page 228

RELATED QUESTIONS

Kirchhoff’s first law, i.e., ΣI = 0 at a junction, deals with the conservation of ______.


Two cells of emf 1.5 Volt and 2 Volt having respective internal resistances of 1 Ω and 2 Ω are connected in parallel so as to send current in the same direction through an external resistance of 5 Ω. Find the current through the external resistance.


State Kirchhoff’s second (voltage) law.


What is the basis of Kirchhoff’s current law and voltage law?


Are Kirchhoff’s laws applicable to both AC and DC circuits?


A carrier wave of peak voltage 16 V is used to transmit a signal. If the modulation index is 75%, the peak voltage of the modulating signal is ______.


Kirchhoff's junction rule is a reflection of ____________.


The magnitude and direction of the current in the circuit shown will be ______

 


The potential difference (VA - VB) between the points A and B in the given figure is ______.


What determines the conventional direction of the product of current and resistance while applying the Kirchhoff's law?


Which of the following is the dimensional formula for electric polarisation?


In the following electrical network, the value of 'I' is


The current in the arm CD of the circuit will be


The current I3 in the following circuit is ____________.


According the Kirchhoff's law, in any analytic circuit, if the direction of current is assumed opposite, then the value of current will be ____________.


Kirchhoff's law of radiation proves that ______ 


Using Kirchhoff's law, find the current flowing through the given circuit.

 


State sign convention of Kirchhoff's voltage law.


State Kirchhoff's current law sign conventions


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×