Question
How is a voltmeter connected to a component to measure applied voltage?
Answer Options
- A) In series
- B) In parallel
- C) In quadrature
- D) In phase
Correct Answer: B
Explanation
A voltmeter measures the potential difference (voltage) between two points. To ensure the meter itself does not interfere with the circuit it is measuring, it must have extremely high internal resistance. This high resistance means almost no current flows through the meter.
Therefore, a voltmeter is always connected in parallel across the component or section of the circuit you wish to measure. This allows the meter to measure the voltage drop across the component while maintaining the original current flow through the rest of the circuit.
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