Resistors In Series - The Easy Way! | Summary and Q&A

TL;DR

This content explains how to calculate the total resistance, current, voltage, and power in a series circuit.

Key Insights

• 💐 Resistors in a series circuit are connected in a single path, resulting in the same current flowing through each resistor.
• 🍹 The total resistance in a series circuit is the sum of the individual resistances.
• 👮 The voltage across a resistor can be calculated using Ohm's law.
• ⚡ The sum of the voltage drops across the resistors is equal to the voltage supplied by the battery.
• ✊ Resistor power can be calculated using either the formula P = I^2 * R or P = V^2 / R.
• 🔋 The power delivered by the battery in a series circuit is equal to the total power absorbed by the resistors.
• 🔋 The power delivered by the battery and absorbed by the resistors follow the law of conservation of energy.

Transcript

consider the circuit shown below calculate the total resistance of the circuit so if you want to try this problem i'll pause the video and work on it and then answer every question now we have a circuit where the resistors are connected in series and the reason why they're connected in series is because there's only one path for the current to flow... Read More

Questions & Answers

Q: What is the total resistance in a series circuit?

In a series circuit, the total resistance is obtained by adding up the individual resistances. For example, in a circuit with resistors of 4 ohms and 8 ohms, the total resistance is 12 ohms.

Q: How can the current flowing from the battery be determined in a series circuit?

The current flowing from the battery can be calculated by dividing the voltage of the battery by the total resistance of the circuit. For instance, if the battery voltage is 36 volts and the total resistance is 12 ohms, the current is 3 amps.

Q: How can the voltage across each resistor be calculated?

The voltage across a resistor can be calculated using Ohm's law, which states that voltage is equal to the current multiplied by the resistance. For example, if the current is 3 amps and the resistance is 8 ohms, the voltage across the resistor is 24 volts.

Q: Why do resistors absorb electrical energy?

Resistors absorb electrical energy because they convert it into heat. As charges flow through a resistor, they lose energy, resulting in a decrease in their electric potential.

Summary & Key Takeaways

• The circuit consists of resistors connected in series, allowing current to flow through each resistor with the same intensity.

• The total resistance of a series circuit is the sum of the individual resistances.

• The current flowing from the battery can be calculated using Ohm's law and is equal to the battery voltage divided by the total resistance.