In direct current (DC) electronics, circuit modifications and faults alter overall circuit parameters. Match each series circuit condition on the left with its correct electrical effect on the right.
- Adding an additional resistor in series with existing loadsTotal circuit resistance increases, which causes total loop current to decrease.
- Developing a complete open circuit at one componentThe single conductive loop is broken, reducing total circuit current to zero amperes.
- Placing a direct short circuit across one of several series resistorsTotal equivalent resistance decreases, causing loop current and remaining voltage drops to increase.
- Doubling the applied source voltage across the unchanged series stringTotal circuit current and all individual resistor voltage drops double proportionally.
Answer
Adding a series resistor increases total resistance and decreases loop current; an open circuit drops current to zero; shorting a resistor reduces total resistance and increases current and remaining voltage drops; doubling source voltage doubles both total current and individual voltage drops.
In a series circuit, current flows through a single continuous path. Total resistance is the sum of all individual resistances (). Adding a resistor increases total resistance, reducing current. Shorting a resistor bypasses that element, lowering total resistance and increasing loop current, which increases the voltage drop across the remaining resistors (). An open circuit breaks the loop, reducing current to zero. Doubling the source voltage across a fixed total resistance doubles the current and doubles each individual voltage drop proportionally.
Step-by-Step Solution
Key Concept
Series Circuit Governing Rules and Fault Characteristics
Estimated Time:1m 15s