# Current direction after changing inductor to short circuit

• Abdulwahab Hajar
In summary, the conversation discusses the flow of current through resistors in a circuit with a closed switch and an inductor acting as a short circuit. It is explained that current will pass through the path with the least resistance, and in this case, the 3Ω resistor will not have any current passing through it due to the lack of potential difference across it. This is because the inductor acts as a short circuit, providing a path of lower resistance for the current to flow through.
Abdulwahab Hajar

## Homework Statement

In the figure in the picture uploaded assume that the switch has been closed for a long time such that the inductor acts like a short circuit. Through which resistors does the current pass through and why??

## Homework Equations

A short circuit is basically a wire or a zero resistance, and as we know current passes through the path with least resistance.

## The Attempt at a Solution

I know what the solution but I don't understand why, it says the current won't pass through the 3Ω resistor... Is it because no potential difference is across it meaning that the current would be zero??
Thank you

#### Attachments

• short circ q.jpg
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Abdulwahab Hajar said:
Is it because no potential difference is across it meaning that the current would be zero??
Yes.

Abdulwahab Hajar
cnh1995 said:
Yes.
Thank you sir

## 1. Why does changing an inductor to a short circuit affect current direction?

The inductor is a passive electronic component that stores energy in the form of a magnetic field. When it is changed to a short circuit, it effectively becomes a wire with very low resistance. This changes the circuit's overall impedance, causing a change in the current flow.

## 2. How does the current direction change after an inductor is changed to a short circuit?

The current direction will depend on the overall circuit configuration and the direction of the magnetic field in the inductor. In some cases, the current may reverse direction, while in others it may decrease or increase in magnitude.

## 3. Can changing an inductor to a short circuit damage the circuit?

It is possible for changing an inductor to a short circuit to cause damage to the circuit if not done properly. This is because the sudden change in impedance can cause a surge in current, potentially damaging components. It is important to carefully consider the circuit design and potential effects before making this change.

## 4. Are there any benefits to changing an inductor to a short circuit?

In some cases, changing an inductor to a short circuit can be beneficial. It can help to reduce voltage spikes and noise in a circuit, as well as stabilize the overall current flow. This can be useful in certain applications such as power supplies or motor control circuits.

## 5. Is changing an inductor to a short circuit a reversible process?

Yes, changing an inductor to a short circuit is a reversible process. It can be easily undone by simply removing the short circuit and reconnecting the inductor. However, it is important to note that the circuit's overall behavior may be affected and may need to be recalculated for the new configuration.

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