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Electronics - Series Circuits

Exercise : Series Circuits - Filling the Blanks
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 ___.
10 komega.gif
50 komega.gif
125 omega.gif
20 omega.gif
Answer: Option
Explanation:
No answer description is available. Let's discuss.
12.
If four 90 omega.gif resistors are connected in series across an 18 V source, the current equals ___.
50 mA
0.2 A
5 A
20 A
Answer: Option
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.
13.
–1.2 V, +15 V, and –6 V batteries are connected in series. The magnitude of total voltage is _________.
7.8 V
10.2 V
22.2 V
1.3 V
Answer: Option
Explanation:
No answer description is available. Let's discuss.
14.

In the given circuit, _____ are in series.

R1 and R3
R3 and R5
R5 and R7
None of the above
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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