Physics

Problem

For an ideal transformer, which of the following relations between the rms voltages

V_p

and

V_s

and the turn numbers

N_p

and

N_s

is correct? a)

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

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

\dfrac{V_s}{V_p}=\dfrac{I_s}{I_p}

\dfrac{V_s}{V_p}=\left(\dfrac{N_s}{N_p}\right)^{\!2}