An ideal step-down transformer has a primary coil of 330 turns and a secondary c

Question

An ideal step-down transformer has a primary coil of 330 turns and a secondary coil of 22 turns. Its primary coil is plugged into an outlet with 110 V(AC), from which it draws an rms current of 0.61 A. What is the voltage in the secondary coil? Tries 0/99 Calculate the rms current in the secondary coil. What is the relationship between the primary and secondary currents in a transformer? Incorrect. Tries 1/99 Previous Tries Assuming that the transformer secondary is driving a resistive load, calculate the average power dissipated in the resistor.

Explanation / Answer

voltage in the secondary coil=22*110/330=7.33V

rms current in the secondary coil.=330*0.61/22=9.15 A

relationship between the primary and secondary currents in a transformer:

Iprimary/Isecondary= Nsecondary/N primary

average power dissipated in the resistor=0.61*110=67.1 W

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