Series circuits electronic interview question

11.

If five equal resistors are connected in series with a 20 V source, and a current of 400 µA is measured, each resistor equals ___.
A.     10 komega.gif
B.     50 komega.gif
C.     125 omega.gif
D.     20 omega.gif
Answer & Explanation

Answer: Option A

Explanation:

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12.

If four 90 omega.gif resistors are connected in series across an 18 V source, the current equals ___.
A.     50 mA
B.     0.2 A
C.     5 A
D.     20 A
Answer & Explanation

Answer: Option A

Explanation:

By Ohm’s law, V = IR.

I = V/R

Given, Four 90 ohm resisters in series.

So, R = ( R1 + R2 + R3 + R4) = 4 x 90 = 360 ohms.

Therefore, I = 18/360 = 0.05 A [or] 50 milli amps.

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13.

–1.2 V, +15 V, and –6 V batteries are connected in series. The magnitude of total voltage is _________.
A.     7.8 V
B.     10.2 V
C.     22.2 V
D.     1.3 V
Answer & Explanation

Answer: Option A

Explanation:

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14.

In the given circuit, _____ are in series.

A.     R1 and R3
B.     R3 and R5
C.     R5 and R7
D.     None of the above
Answer & Explanation

Answer: Option B

Explanation:

No answer description available for this question

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