Back to Motors, Generators, and Transformers — Problem 3 · Task Set 14

Exercises: Motors, Generators, and Transformers

Work through each section in order. Show your work where indicated.

Grade 11·21 problems·~30 min·OpenStax Physics (High School)·section·sec-20-3

Work through problems with immediate feedback

Recall / Warm-Up

A transformer has $N_p$ turns in the primary coil and $N_s$ turns in the secondary coil, with voltages $V_p$ and $V_s$ . Which equation correctly states the turns ratio?

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

$V_s \cdot N_s = V_p \cdot N_p$

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

$V_s = V_p + (N_s - N_p)$