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Electric circuits miscellaneous

  1. In a two-terminal network, open-circuit voltage mesured at the given terminals by an electronic vol t met er is 100 V. A short -circuit current measured at the same terminals by an ammeter of negligible resistance is 5 A. If a load resistor of 80 Ω is connected at the same terminals, then current in the load resistor will be ________ A
    1. 1
    2. 2
    3. 3
    4. 4
Correct Option: A

ZTH =
VOC
=
100
= 20
ISC5

Total resistance, Z = ZTH + 80 = 100 Ω
∴ Current, I =
100
= 1 A
Z



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