Physics
In a step up transformer:
- Ns = Np
- Ns < Np
- Ns > Np
- nothing can be said
Electro-Magnetism
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Answer
Ns > Np
Reason — In a step up transformer the number of turns in the secondary coil is more than the number of turns in the primary coil ( Ns > Np) i.e., turns ratio n > 1. It increases the a.c. voltage and decreases the current. i.e., Es > Ep and Is < Ip.
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