CBSE BoardEnglish MediumSTD 12 SciencePhysics6. Electromagnetic induction1 Mark
MCQ
A transformer is based on the principle of
✓
Mutual inductance
B
Self inductance
C
Ampere's law
D
Lenz's law
✓
Answer
Correct option: A.
Mutual inductance
a (a) A transformer has got one primary coil, the change of current in which produces an induced emf in the secondary coil. Hence it is based on the principle of mutual induction.
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