The primary voltage of a transformer is 120V with 100 turns in the primary winding. If the secondary voltage is 12V, how many turns are in the secondary winding?

The primary voltage of a transformer is 120V with 100 turns in the primary winding. If the secondary voltage is 12V, how many turns are in the secondary winding?

• A. 0.1
• B. 1
• C. 10
• D. 100

Answer: (C)

To find the number of turns in the secondary winding of a transformer, you can use the transformer turns ratio formula, which relates the primary and secondary voltages and the number of turns in each winding. The formula is as follows: \[ \frac{V_p}{V_s} = \frac{N_p}{N_s} \] Where \(V_p\) is the primary voltage, \(V_s\) is the secondary voltage, \(N_p\) is the number of turns in the primary winding, and \(N_s\) is the number of turns in the secondary winding. In this scenario, the primary voltage (\(V_p\)) is 120V, the secondary voltage (\(V_s\)) is 12V, and there are 100 turns in the primary winding (\(N_p\)). We need to find \(N_s\), the number of turns in the secondary winding. First, we rearrange the formula to solve for \(N_s\): \[ N_s = N_p \times \frac{V_s}{V_p} \] Substituting the known values into the formula gives: \[ N_s = 100 \times \frac{12}{120} \

To find the number of turns in the secondary winding of a transformer, you can use the transformer turns ratio formula, which relates the primary and secondary voltages and the number of turns in each winding. The formula is as follows:

[

\frac{V_p}{V_s} = \frac{N_p}{N_s}

]

Where (V_p) is the primary voltage, (V_s) is the secondary voltage, (N_p) is the number of turns in the primary winding, and (N_s) is the number of turns in the secondary winding.

In this scenario, the primary voltage ((V_p)) is 120V, the secondary voltage ((V_s)) is 12V, and there are 100 turns in the primary winding ((N_p)). We need to find (N_s), the number of turns in the secondary winding.

First, we rearrange the formula to solve for (N_s):

[

N_s = N_p \times \frac{V_s}{V_p}

]

Substituting the known values into the formula gives:

[

N_s = 100 \times \frac{12}{120}

\