Answer to Question #236339 in Electrical Engineering for Malazzeh

Question #236339
A transformation has a voyage 480 V and current 2.5 A on the primary side and 40 V on the secondary . What is the secondary current on the load ?
1
Expert's answer
2021-09-12T23:07:42-0400

According to the law of conservation of energy for an ideal transformer, the following expression is valid:


"U_p I_p =U_sI_s"

where the voltage is 480 V and the current is 2.5 A on the primary side:


"U_p=480V,\\space I_p=2.5A"

and 40 V voltage and current on the secondary side:


"U_s=40V, \\space I_S=\\frac{U_pI_p}{U_s}=\\frac{480V\\cdot2.5A}{40V}=30A"

Answer: the secondary current on the load is 30A


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