Welcome back — missed you this week.
C
Step 1: Identify the given values for the transformer.
Primary voltage, Vp=200 V
Primary current, Ip=30 A
Output voltage, Vs=450 V
Output current, Is=?
Step 2: Apply the principle of conservation of power for an ideal transformer.
For an ideal transformer, the input power equals the output power.
Pp=Ps
VpIp=VsIs
Step 3: Substitute the known values into the equation and solve for the output current Is.
(200V)×(30A)=(450V)×Is
6000VA=450V×Is
Is=450V6000VA
Is=45600 A
Is=340 A
Is≈13.33 A
The output current is approximately 13.33 A. This matches option C.
The final answer is 13.33A.
Send me the next one 📸