Important conditions of Current Divider Rule

Note that there are certain constraints under which the above formula for current divider rule is derived.

These are as follows:

  • All the sources in the circuit whether it be a current source or a voltage source, are considered being ‘ideal’.
    This means that the internal resistance in the source elements is considered to zero.
  • All the elements in the circuit are considered being ‘linear’ so their properties won’t change with respect to time.

Current Divider Rule

To understand this rule, one needs to have an idea about electric circuits and their classification according to the arrangement of components in the given circuit. Because as per their working, they act as divider circuits.

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Table of Content

What is the Current Divider Rule?Derivation of Current Divider RuleImportant Conditions of Current Divider RuleSample Problems on Current Divider RuleWhen to Use the Current Divider Rule?Advantages of Current Divider RuleDisadvantages of Current Divider RuleApplications of Current Divider Rule...

Electric Circuit

An electric circuit provides a path through which electric current can be transmitted. It includes a device like a battery or a generator that provides energy to the charged particles constituting the current. To understand the current divider rule, will discuss its classification....

What is the Current Divider Rule?

According to this rule, the current in each branch of a given circuit is represented as a portion of the total current flowing in the circuit....

Derivation of current divider rule

Consider the following circuit:...

Derivation using Conductance

The conductance of any element of a circuit is mathematically given as ‘(1/Resistance)’....

Important conditions of Current Divider Rule

Note that there are certain constraints under which the above formula for current divider rule is derived....

Sample Problems on Current Divider Rule

Problem 1:...

When to use current divider rule?

We can use the current divider rule in the following conditions:...

Advantages of Current Divider Rule

It is easy to apply when the circuit will have parallel branches. It makes the calculation easier for network analysis. It provides an intuitive understanding of the division of current in the branches....

Disadvantages of the Current Divider Rule

The current divider rule assumes that the circuit is ideal i.e. purely resistive sources. It does not consider parasitic capacitance or inductance which can affect the current distribution. When resistances are significantly different in magnitude, then the rule may lead to an imbalanced current division leading to errors in the calculation.It assumes the voltage source to be constant. If voltage fluctuates or if there are multiple voltage sources, it might lead to errors....

Applications of Current Divider Rule

Current division is used to calculate the current in the branches of a circuit in which resistors are in parallel.It is used in making LEDs as the limiting current required in each branch for the filament to glow can be known using this rule.Used in charging and discharging of batteries in which current flow to each battery can be controlled using the current divider rule.A current also acts as a signal in many electronic circuits, this rule helps in dividing the signal into multiple channels along the communication pathway....

Conclusion

The current divider rule has wide range of day to day applications in communication systems, working of batteries, and even in the glowing of LED bulbs. It is used in finding the magnitude of current flowing in a particular branch of the circuit. It is mathematically given as...

FAQs on Current Divider Rule

Q.1: How would the formula change if in a given circuit capacitors and inductors were also present?...