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What is the rule of current in parallel circuit?

Question

What is the rule of current in parallel circuit?

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Solution

In a parallel circuit, the rule of current states that the total current entering a junction or a node must equal the total current leaving the same junction or node. This is also known as Kirchhoff's Current Law.

Here are the steps to understand this:

  1. Identify a junction or node in the circuit. This is a point where three or more conductors meet.

  2. Calculate or measure the total current entering the junction. This is the sum of the currents carried by each conductor leading into the junction.

  3. Calculate or measure the total current leaving the junction. This is the sum of the currents carried by each conductor leading away from the junction.

  4. According to Kirchhoff's Current Law, these two totals must be equal. That is, the total current entering the junction equals the total current leaving the junction.

  5. If the totals are not equal, there is a mistake somewhere in your calculations or measurements. Check your work and try again.

  6. Remember that in a parallel circuit, the current is divided among the various branches. The amount of current in each branch depends on the resistance of that branch. The lower the resistance, the higher the current.

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