Physics 0625 · IGCSE · Electromagnetic effects

Electromagnetic effects — practice question

A transformer has $100\%$ efficiency. Which pair of equations are both correct for the transformer?

  • A$I_p V_p = I_s V_s$ and $\frac{V_p}{N_p} = \frac{V_s}{N_s}$
  • B$\frac{V_p}{I_p} = \frac{V_s}{I_s}$ and $N_p V_p = N_s V_s$
  • C$\frac{V_p}{I_p} = \frac{V_s}{I_s}$ and $\frac{V_p}{N_p} = \frac{V_s}{N_s}$
  • D$I_p V_p = I_s V_s$ and $N_p V_p = N_s V_s$

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