Advertisements
Advertisements
Question
Are Kirchhoff’s laws applicable to both AC and DC currents?
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.
APPEARS IN
RELATED QUESTIONS
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.
Kirchhoff’s second law (voltage law) is based on ______
State Kirchhoff’s first (current) law.
State Kirchhoff’s second (voltage) law.
The figure shows a network of currents. The magnitude of currents is shown here. The current I will be ______
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 ______
In the given circuit, the emf 'E' of the cell is ______.
The potential difference (VA - VB) between the points A and B in the given figure is ______.
Which of the following is the dimensional formula for electric polarisation?
In the figure shown, the voltage across C3 will be
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 ____________.
Using Kirchhoff's law, find the current flowing through the given circuit.
Two cells of emf 4 V and 2 V having a respective internal resistance 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.
In the following network, the current flowing through 15 Ω resistance is ______.
State Kirchhoff's current law sign conventions
The figure shows part of an electric circuit. The potential difference VA - VB is ______.