Answer the following: a) A certain metal cable has a resistance R, and we have another cable of the same material with the same length, but twice its diameter. The resistance of the second wire will be: a) 1/4 R b) 1/2 R c) 2 R d) 4 R b) The resistance of a conductive material does not depend on its: a) mass b) long c) Sectional area d) resistivity e) temperature c) Which of the following combinations of length and sectional area for a certain copper cable will have the least resistance: a) L and A b) 2L and 1/2 A c) 1/2 L and 2A d) It does not matter because the volume of copper re
Ohm's law
Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.
Path of Least Resistance
In a series of alternate pathways, the direction of least resistance is the actual or metaphorical route that offers the least resistance to forwarding motion by a given individual or body.
1) Answer the following:
a) A certain metal cable has a resistance R, and we have another cable of the same material with the same length, but twice its diameter. The resistance of the second wire will be:
a) 1/4 R
b) 1/2 R
c) 2 R
d) 4 R
b) The resistance of a
a) mass
b) long
c) Sectional area
d) resistivity
e) temperature
c) Which of the following combinations of length and sectional area for a certain copper cable will have the least resistance:
a) L and A
b) 2L and 1/2 A
c) 1/2 L and 2A
d) It does not matter because the volume of copper remains constant
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