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