Question

A step-down transformer has more loops on which coil?

A. primary coil
B. secondary coil
C. neither
D. both

Answer 1

A). Primary coil

Step-by-step 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(d\phi_0)/(dt)`

`E_p = N_pfrac{d\phi_0}{dt}`

now we have

`(E_s)/(E_p) = (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

Answer 2

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