When resistor 1 and 2 arc connected in series, the equivalent resistance is 16.0

Question

When resistor 1 and 2 arc connected in series, the equivalent resistance is 16.0 Ohm. When they are connected in parallel, the equivalent resistance is 4.0 Ohm. The resistance of the two registers are: a) 12 Ohm and 20 Ohm b) 12 Ohm and 4 Ohm c) 8 Ohm and 8 Ohm d) 16 Ohm and 4 Ohm e) 20 Ohm and 4 Ohm Consider the three resistors and the battery in the circuit shown. Which resistors, if any, are connected in serial? f) R_2 and R_1 g) R_2 and R_3 h) R_1 and R_3 i) R_1 and R_2 and R_3 j) This cannot be determined In the diagram, the current in the 3 - Ohm resistor is 2 A. The potential difference between points 1 and 2 is: A) 7.5 V B) 8 V C) 15 V D) 10 V E) 20 V A negatively-charged particle travels parallel to magnetic field lines within a region of space. Which one of the following statements concerning the force exerted on the particle is true? a) The force is directed perpendicular to the magnetic field. b) The force is perpendicular to the direction in which the particle is moving. c) The force slows the particle. d) The force accelerates the particle. e) The force has a magnitude of zero newtons.

Explanation / Answer

Answer first

let the two resistors are A and B

so if they are connected in series then A + B = 16................................(1)

if they are connected in parallel then 1/A + 1/ B = 1 / 4

SO, AB / A+B = 4

substituting (1) AB = 4 * 16 = 64

SO the answer is C 8 ohm and 8 ohm

according to chegg guideline you have to post each question as a separate question....hope you understand thanks..........

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