Question
The electric motor in a toy train requires a voltage of 4.5 $\mathrm{V}$ . Find the ratio of turns on the primary coil to turns on the secondary coil in a transformer that will step the $120-\mathrm{V}$ household voltage down to 4.5 $\mathrm{V}$ .
Step 1
Step 1: We start by writing down the transformer equation which is given by: \[ \frac{N_P}{N_S} = \frac{V_P}{V_S} \] Show more…
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The electric motor in a toy train requires a voltage of 4.5 V. Find the ratio of turns on the primary coil to turns on the secondary coil in a transformer that will step the 120-V household voltage down to 4.5 V.
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