Physics 0625 · IGCSE · Electric circuits

Electric circuits — practice question

The diagram illustrates a potential divider circuit. The resistance of the variable resistor is made larger. Which row shows the effect on the reading on voltmeter P and on voltmeter Q?

  • Areading on voltmeter P decreases; reading on voltmeter Q decreases
  • Breading on voltmeter P decreases; reading on voltmeter Q increases
  • Creading on voltmeter P increases; reading on voltmeter Q decreases
  • Dreading on voltmeter P increases; reading on voltmeter Q increases

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