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PRACTICE / Kirchhoff laws

An apparently balanced divider is loaded

An 18 V ideal source feeds two 4 kΩ resistors in series. An 8 kΩ voltmeter is placed across the lower resistor.

What does the voltmeter read?

Organize the givens & assumptions
  • Source: 18 V
  • Upper/lower resistors: 4 kΩ each
  • Voltmeter resistance: 8 kΩ

Settled lumped DC circuit, ideal connecting wires, positive constant Ohmic resistances and no changing external magnetic flux. Sources are ideal except for explicitly specified series resistances.

  1. A7.2 V7.2\ \mathrm V
  2. B9 V9\ \mathrm V
  3. C12 V12\ \mathrm V
  4. D6 V6\ \mathrm V

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