Which is true about the equivalent of resistors in series? A The equivalent resi

Question

Which is true about the equivalent of resistors in series? A The equivalent resistance is more than the largest value of the individual resistances. B The equivalent resistance is less than the smallest value of the individual resistances. C The equivalent resistance is intermediate between the smallest value and largest value of the individual resistances. Two wires made of the same material have the same length but different diameters. They are connected in series to a battery. The quantity that is the same for the wires is: A the current B the current density C the electric field Resistances of 2.0 ohm, 4.0 ohm, and 6.0 ohm and a 24-v emf device are all in series. The circuit is initially ungrounded. After grounding, the current in the circuit: A increases B decrease C does not change Four 20-ohm resistors are connected in series and the combination is connected to a 20-v emf device. The current in any one of the resistors is: A 0.25 A B 1.0 A C 4.0 A D 100 A Figure shows a multiloop circuit containing one ideal battery and four resistances with the following values: R1 = 20 ohm, R2 = 20 ohm, R3 = 30 ohm, R4 = 8 ohm, elementof = 12 v (a) What is the current through the battery? (b) What is the current i2 through R2?

Explanation / Answer

1)
In series,
Req = R1 + R2 + R3 …
So, Req will be larger than all of the R1,R2 or R3

Answer: A

2)
In series, same current flows through all the resistors
So, current will be same Here

Since current is same,
current density = current/Area will not be same for both because area is different for both

E = current density * resistivity will also be different since current density is different

Answer: A

I am allowed to answer only 1 question at a time

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.