Practicing Success

Target Exam

CUET

Subject

Physics

Chapter

Alternating Current

Question:

If Ns is the number of turns in secondary coil and Np is the number of turns in primary coil, then for a step down transformer, which of the following is true?

Options:

Ns>Np

Ns=Np

Ns<Np

None of the above

Correct Answer:

Ns<Np

Explanation:

A step-down transformer is a type of transformer that converts the high voltage (HV) and low current from the primary side of the transformer to the low voltage (LV) and high current value on the secondary side of the transformer.

The transformer turns ratio (n) for a step down transformer is approximately proportional to the voltage ratio: $\frac{N_s}{N_p} = \frac{V_s}{V_p} <1$