A technician is troubleshooting a direct-current parallel lighting system. Match each circuit modification on the left with its direct electrical effect on the system on the right.
- Adding an additional parallel branch loadDecreases total equivalent resistance and increases total current drawn from the source
- Disconnecting one existing branch loadIncreases total equivalent resistance while other branches continue to operate normally
- Increasing the resistance of a single branchReduces current flow through that specific branch without altering voltage across the others
- Creating a short circuit across any one branchBypasses all branches and causes total circuit current to surge dangerously
Cevap
The circuit modifications match their electrical effects as follows: adding an additional branch decreases total resistance and increases total supply current; disconnecting one branch increases total resistance while allowing remaining branches to operate normally; increasing resistance of a single branch reduces current only through that branch; creating a short circuit across one branch bypasses all branches and causes a dangerous surge in total current.
Each pair reflects core parallel circuit behavior: adding branches lowers equivalent resistance and raises total current; disconnecting a branch raises equivalent resistance without interrupting other branches; changing one branch resistance alters only that branch's current; and shorting across one branch shorts the entire common bus.
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Anahtar Kavram
Parallel Circuit Branch Behavior and Independence
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