# Computer Science - Electronic Principles

### Exercise :: Electronic Principles - Section 3

11.

What is the impedance of a circuit composed of a 100 ohm resistor connected in parallel with a capacitor that has a reactance of 100 ohm?

 A. 60 Ohm B. 99.3 Ohm C. 250 Ohm D. 70.7Ohm E. None of the above

Explanation:

No answer description available for this question. Let us discuss.

12.

Current can flow through a normally open push button switch as long as:

 A. you are pressing the button B. you are not pressing the button C. its contact remain open D. its contact remain open E. None of the above

Explanation:

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13.

Doubling the operating frequency of a purely capacitive circuit:

 A. has no effect on the total circuit current B. doubles the amount of total current C. cuts the total current by one-half D. thrice the amount of total current E. None of the above

Explanation:

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14.

How much current flows through a 0.02 micro F capacitor that is operating from a 12-V ac, 100-Hz source?

 A. 0.151 mA B. 157 raA C. 0.995 mA D. 2.02 A E. None of the above

Explanation:

No answer description available for this question. Let us discuss.

15.

An unloaded zener regulator has a source voltage of 20 V, a series resistance of 330 W, and a zener voltage of 12 V, What is the Zener current?

 A. 28.4 mA B. 24.2 mA C. 34.4 mA D. 68.4 mA E. None of the above