Why is a voltmeter connected in parallel with the component across which potential difference is to be measured?
ASo that the same current as the component passes through it
BSo that it measures the potential difference between the two ends of the component
CSo that it increases the total current in the circuit
DSo that it behaves like a source of emf
Answer & Solution
Correct answer: B. So that it measures the potential difference between the two ends of the component
Potential difference is defined between two points. A voltmeter must therefore be connected across the two ends of the component, which means a parallel connection. It is not intended to carry the same current as the component, so option A is incorrect.
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