Exam-style question
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What are lost volts in a circuit?.
- A.The voltage supplied by the power source
- B.The voltage drop due to internal resistance in a power source
- C.The voltage across external components in a circuit
- D.The total voltage available in a circuit
Model answer
What a good answer should say
- The voltage drop due to internal resistance in a power source
Explanation
Why this works
Lost volts are defined as the voltage drop that occurs due to the internal resistance of a power source. The key difference is that lost volts represent energy that is not available for external work.
This concept applies when current flows through the circuit, highlighting the inefficiencies in energy transfer from the power source to the load.
Common mistake
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