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Which one of the following statements is NOT correct?

Options

  1. AAn ammeter is always connected in series in the circuit to measure the current
  2. BA Voltmeter is always connected to parallel in a circuit to measure the voltage
  3. CA voltmeter has a high resistance and an ammeter has a low resistance
  4. DA voltmeter has a low resistance and an ammeter has a high resistance

Correct answer

D. A voltmeter has a low resistance and an ammeter has a high resistance

Step-by-step solution

An ammeter is used to measure current and is connected in series in a circuit. To ensure it does not significantly alter the current it is measuring, it must have a very low resistance. A voltmeter is used to measure potential difference and is connected in parallel across the component. To ensure it draws negligible current from the circuit, it must have a very high resistance. Therefore, the statement that a voltmeter has a low resistance and an ammeter has a high resistance is incorrect. Answer: A voltmeter has

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