question archive Good Morning tutor, this is a question from Unit Electricity and Magnetism, Grade 11 Physics,
Good Morning tutor, this is a question from Unit Electricity and Magnetism, Grade 11 Physics,
Subject:PhysicsPrice:2.85 Bought3
Good Morning tutor, this is a question from Unit Electricity and Magnetism, Grade 11 Physics,. Please answer it as soon as possible, in the least time as possible. I will make sure to rate your answers and recommend you on Course Hero. Thank you so much. If you have any questions about the information given in the question, I will be online.
A transformer has 100 turns in its primary coil and 200 turns in its secondary coil. If the primary coil
is supplied with a 1.20 A, 270-V current, what is the power output of the secondary coil?
a. 1.62 W d. 324 W
b. 32.4 W e. 648 W
c. 162 W
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Option D
Step-by-step explanation
Number of primary turns(Np) = 100 turns
Number of secondary turns (Ns) = 200 turns
Current on primary turns (Ip) = 1.20A
voltage on primary turns (Vp) = 270v
Voltage at secondary turn (Vs) = ?
Current at secondary turn (Is) = ?
For an ideal transformer, we have that
Vp/Vs = Np/Ns
270/Vs = 100/200
270/Vs = 0.5
2 × Vs = 270
Vs = 270/0.5 = 540v
Is/Ip = Np/Ns
Is/1.20 = 100/200
Is/1.20 = 0.5
Is = 0.5 × 1.2
Is = 0.6A
Power output at the secondary coil is 0.6 × 540 = 324w
Option D
