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Combining resistors in series and parallel

Electricity and circuitsSeries and parallel circuits

Key concepts

What you'll likely be quizzed about

  • In a series circuit, resistors are connected end-to-end.
  • The total resistance increases, calculated by adding individual resistances together.
  • For example, if resistor R1 is 5 ohms and R2 is 10 ohms, the total resistance R_total equals R1 + R2, resulting in 15 ohms.
  • In series, the same current flows through all resistors, meaning voltage is divided among them, contributing to the total voltage drop in the circuit.

Flashcards

Test your knowledge with interactive flashcards

What happens if one resistor in a parallel circuit fails?

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Current continues to flow through other paths.

Key notes

Important points to keep in mind

In series, resistors add up to total resistance.

In parallel, total resistance decreases.

Voltage drops across each resistor in series.

Current divides among resistors in parallel.

Identifying configurations is key to analysis.

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