Electro Magnetic Induction And Alternating Currents Question 220
Question: A generator at a utility company produces 100 A of current at 4000 V. The voltage is stepped up to 2, 40, 000V by a transformer before it is sent on a high voltage transmission line. The current in transmission line is
Options:
A) 3.67 A
B) 2.67 A
C) 1.67 A
D) 2.40 A
Show Answer
Answer:
Correct Answer: C
Solution:
- For a transformer,
$ V_{p}I_{p}=V_{s}I_{s},\Rightarrow I_{S}=\frac{V_{p}I_{p}}{V_{s}}=\frac{4000\times 100}{240000}A $ =1.67A
