Please Hepl me!!!! Thank you!! Certain device has an ideal transformer with 30 t
ID: 1314346 • Letter: P
Question
Please Hepl me!!!! Thank you!!
Certain device has an ideal transformer with 30 turns in its primary and 1050 turns in its secondary.(a) What type of transformer is this? (b) If the device is plugged to a 112-W wall socket, power in the primary coil is 112 W when device is turned on. (a) Find (i) the voltage across the secondary coil, (ii) the current in the secondary coil, and(iii) the average power delivered to the secondary coil. (b) If the primary voltage is doubled and the number of turns in the primary coil is tripled, (i) what must be the number of turns in the secondary coil if the secondary voltage is to remain the same, and (ii) what must be the currents in the primary and secondary coils if the power is to remain the same in the primary coil? Thank you very much! Physics
Explanation / Answer
a) step up transformer
b) i am assuming u mean 112V socket , and P = 112 W
(a)
(i) v2 = (n2/n1) v1 = 3920 V
(ii) since ideal transformer => P2 = 112 W = v2 i2
hence i2 = 112 / 3920 = 0.0286 A
(iii) P2 = P1 since it's an ideal transformer