A step-down transformer has more loops on which coil?
A step-down transformer has more loops in : A. Primary coil
Primary coil refers to the coil to which alternating voltage is supplied. It's usually connected to the AC supply
hope this helps
Answer:
A). Primary coil
Explanation:
As we know that in an ideal transformer the flux linked with primary coil and secondary coil for each turn must be same
so we can say that
\(\phi _p = N_p \phi_0\)
\(\phi_s = N_s\phi_0\)
so as per faraday's law we can say that two EMF is given as
\(E_s = N_s\frac{d\phi_0}{dt}\)
\(E_p = N_pfrac{d\phi_0}{dt}\)
now we have
\(\frac{E_s}{E_p} = \frac{N_s}{N_p}\)
so we can say that
for step down transformer the output voltage is less than the input transformer
\(E_s < E_p\)
so we will have
\(N_s < N_p\)
so turns will be more in
A) Primary coil