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Electric Circuits

Electric Circuits
For Norton’s equivalent circuit

 Voc = Req /Isc.
 Voc = Isc / Req.
 Isc = Voc Req.
 Isc = Voc / Req.

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Electric Circuits
What is the mass number of an element that has 19 protons, 19 electrons, and 20 neutrons?

 19.
 38.
 20.
 39.

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Electric Circuits
A coil of negligible resistance has an induction of 100 mH. The current passing through the coil changes from 2 A to 4 A at a uniform rate in 0.1 sec the voltage across the coil during this time would be __________ V.

 36
 50
 2
 8

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Electric Circuits
A capacitor that stores charge of 0.5 C at 10 V has a capacitance of _____________ farad.

 5.
 10.
 0.05.
 20.

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Electric Circuits
Fall time is the time required for a pulse to decrease from 90 to ________% if its maximum values

 15
 20
 5
 10

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Electric Circuits
The mass of a proton is

 1.672 × 10 - 27 Kg.
 1.609 × 10 - 31 Kg.
 1.675 × 10 - 27 Kg.
 1.602 × 10 - 19 Kg.

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