18. Two charged particles, Q1 and Q2, are a distance r apart. Q, is 5 times larger than Q2, and they have the same sign. If F, is the force Q2 exerts on Q, and F, is the force Q1 and exerts on Q2, compare the forces they exert on one another. a. F = 5F b. F=-5F c. F= F d. F=-F e. SF = F %3D %3D %3D

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Author:Raymond A. Serway, Chris Vuille
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Chapter15: Electric Forces And Fields
Section: Chapter Questions
Problem 16P: Panicle A of charge 3.00 104 C is at the origin, particle B of charge 6.00 104 C is at (4.00 m,...
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18. Two charged particles, Q1 and Q2, are a distance r apart. Q, is 5 times larger than Q2,
and they have the same sign. If F, is the force Q2 exerts on Q, and F, is the force Q1 and
exerts on Q2, compare the forces they exert on one another.
a. F = 5F
b. F=-5F
c. F= F
d. F=-F
e. SF, = F
%3D
Page 15 of 16
Assessment 3 of Semester 2, 2021
PHYS0004 Fundamentals of Physics
19. A device obeying Ohm's law must have resistance which is:
a. Zero.
b. Proportional to current.
c. Proportional to voltage.
d. Proportional to temperature.
e. Constant.
20. Which one of the following is the correct statement regarding the resistance?
a. The resistance of a conductor decreases with increase in temperature.
b. The resistance of a wire is directly proportional to the length of the wire.
C. The resistance of a semiconductor increases with temperature.
d. Resistance increases with increase in cross-sectional area of the wire.
!!! lii
Transcribed Image Text:AaBbCcDdEe AaBbCcDdE AaBbCcDc Normal Title No Spacin 18. Two charged particles, Q1 and Q2, are a distance r apart. Q, is 5 times larger than Q2, and they have the same sign. If F, is the force Q2 exerts on Q, and F, is the force Q1 and exerts on Q2, compare the forces they exert on one another. a. F = 5F b. F=-5F c. F= F d. F=-F e. SF, = F %3D Page 15 of 16 Assessment 3 of Semester 2, 2021 PHYS0004 Fundamentals of Physics 19. A device obeying Ohm's law must have resistance which is: a. Zero. b. Proportional to current. c. Proportional to voltage. d. Proportional to temperature. e. Constant. 20. Which one of the following is the correct statement regarding the resistance? a. The resistance of a conductor decreases with increase in temperature. b. The resistance of a wire is directly proportional to the length of the wire. C. The resistance of a semiconductor increases with temperature. d. Resistance increases with increase in cross-sectional area of the wire. !!! lii
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