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Author Question: A series circuit consists of a 100 V DC power source, a 100 resistor, and a variable resistor of ... (Read 75 times)

tfester

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on: Aug 6, 2020

Question 1

A resistor of unknown resistance and a 15-Ω resistor are connected across a 20-V emf in such a way that a 2.0 A current is observed in the emf. What is the value of the unknown resistance?

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75 Ω

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12 Ω

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7.5 Ω

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30 Ω

◦
5.0 Ω


Question 2

A series circuit consists of a 100 V DC power source, a 100 Ω resistor, and a variable resistor of resistance R, which varies from 0 to 100 Ω. The current in the circuit is



◦
directly proportional to R.

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inversely proportional to R.

◦
directly proportional to (100 Ω + R).

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inversely proportional to (100 Ω + R).

◦
neither directly nor inversely proportional to R or to (100 Ω + R).
Physics for Scientists and Engineers ¦ Serway, Jewett ¦ 9th Edition
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Marked as best answer by tfester on Aug 6, 2020

missalyssa26

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Reply #1 on: Aug 6, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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tfester

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Reply 2 on: Aug 6, 2020
Gracias!

Hdosisshsbshs

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Reply 3 on: Yesterday
Wow, this really help

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