Answer:
The voltage ratio in a transformer is equal to the ratio of the number of turns in the primary and secondary coils. We can use this relationship to find the number of turns in the primary coils, given the primary and secondary voltages and the number of turns in the secondary coils.
The voltage ratio is given by:
Vp/Vs = Np/Ns
where Vp is the primary voltage, Vs is the secondary voltage, Np is the number of turns in the primary coils, and Ns is the number of turns in the secondary coils.
Substituting the given values, we get:
130/50 = Np/5
Cross-multiplying and solving for Np, we get:
Np = 130/50 * 5 = 13
Therefore, there are 13 turns in the primary coils of the transformer.
Step-by-step explanation: