# Resistors in Electric Circuits (12 of 16) Calculating Current for Series Resistors | Summary and Q&A

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October 31, 2013
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Resistors in Electric Circuits (12 of 16) Calculating Current for Series Resistors

## TL;DR

In this video, the concept of current in series resistors is explained, emphasizing that the current remains the same throughout the circuit.

## Key Insights

• 💐 Series resistors are connected one after the other in a circuit, with the current flowing through each resistor consecutively.
• 🍃 The current in a series circuit remains the same throughout, as there is no place for current to be added or leave the circuit.
• ❓ The energy carried by the current is used by the resistors, but the current itself is not used up or destroyed.
• ⚡ The current in a series circuit can be easily calculated by dividing the voltage by the equivalent resistance.
• 🍹 The equivalent resistance in a series circuit is found by summing up the individual resistances.
• 😥 The concept of current being the same at any point in a series circuit is crucial for understanding the behavior of current in these circuits.
• ❓ Series resistors are commonly used in various electronic devices and circuits.

## Questions & Answers

### Q: What are series resistors?

Series resistors are resistors connected one after the other in a circuit, causing the current to flow from one resistor to the next without any branches or parallel connections.

### Q: Does the current change in a series circuit?

No, the current remains the same throughout a series circuit. It is not used up or destroyed but carries the energy through each resistor and is equal at any point in the circuit.

### Q: How can we calculate the current in a series circuit?

The current can be calculated using Ohm's law, where the voltage of the battery is divided by the total resistance of the series circuit.

### Q: What is the significance of the equivalent resistance in a series circuit?

The equivalent resistance is the sum of all resistors in series, and it determines the current flowing through the circuit. It allows us to calculate the current using Ohm's law.

## Summary & Key Takeaways

• The video discusses series resistors, where resistors are connected one after the other in a circuit.

• Current flows from the battery through each resistor in the series without any current being added or leaving the circuit.

• The concept of current being the same throughout a series circuit is explained, emphasizing that the current is not used up or destroyed.

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