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4. Moving charges and magnetism — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics4. Moving charges and magnetism1 Mark
MCQ
The deflection in a moving coil galvanometer is
  • A
    Directly proportional to the torsional constant
  • ✓
    Directly proportional to the number of turns in the coil
  • C
    Inversely proportional to the area of the coil
  • D
    Inversely proportional to the current flowing
✓

Answer

Correct option: B.
Directly proportional to the number of turns in the coil
b
(b)$\theta = \frac{{NiAB}}{C} \Rightarrow \theta \propto N$ (Number of turns)

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