# Electrical Engineering - RC Circuits

### Exercise :: RC Circuits - General Questions

11.

What is the value of the hypotenuse of a right triangle whose sides are 12 and 18?

 A. 4.24 B. 3.46 C. 2.16 D. 21.63

Answer: Option D

Explanation:

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12.

The complex number 6 + j6 is equivalent to

 A. 6 45° B. 36 45° C. 8.48 45° D. 8.48 90°

Answer: Option C

Explanation:

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13.

In a parallel RC circuit, there is 100 mA through the resistive branch and 100 mA through the capacitive branch. The total rms current is

 A. 200 mA B. 100 mA C. 282 mA D. 141 mA

Answer: Option D

Explanation:

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14.

An ac circuit consists of a resistor and a capacitor. To increase the phase angle above 45°, the following condition must exist:

 A. R = XC B. R > XC C. R < XC D. R = 5XC

Answer: Option C

Explanation:

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15.

What is the angular difference between +j4 and –j4?

 A. 30° B. 90° C. 180° D. 270°

Answer: Option C

Explanation:

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