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JEE Main20203 Sep 2020Evening ShiftPhysicsCurrent ElectricityActual

Which of the following will NOT be observed when a multimeter (operating in resistance measuring mode) probes connected across a component, are just reversed?

Options

  1. AMultimeter shows an equal deflection in both cases i.e., before and after reversing the probes if the chosen c
  2. BMultimeter shows NO deflection in both cases i.e. before and after reversing the probes if the chosen componen
  3. CMultimeter shows a deflection, accompanied by a splash of light out of connected component in one direction an
  4. DMultimeter shows NO deflection in both cases i.e. before and after reversing the probes is the chsosen compone

Correct answer

B. Multimeter shows NO deflection in both cases i.e. before and after reversing the probes if the chosen componen

Step-by-step solution

Multimeter shows NO deflection in both cases i.e. before and after reversing the probes if the chosen component is capacitor. Multimeter shows deflection when it connects with capacitor If we assume that LED has negligiable resistance then multimeter shows no deflection for the forward bias but when it connects in reverse direction, it break down occurs so splash of light out. The resistance of metal wire may be taken zero, so no deflection in multimeter No matter, how we connect the resistance across multimeter It

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