What happens when the test probes of an ohmmeter (using a moving coil meter) are short-circuited?

What happens when the test probes of an ohmmeter (using a moving coil meter) are short-circuited?

Right Answer is:

The meter deflects to full scale.

SOLUTION

  • When the test leads of an ohmmeter are directly shorted together, the meter movement will have a maximum amount of current through it.
  • With zero resistance between the leads, the meter should register full-scale deflection.
  • This is because ohmmeters are designed so that full deflection (to the right of the scale) represents zero resistance.

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