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Plz help me it’s a true or false question A shorter wire will allow electricity to

move through at a higher rate than a
longer wire.
A short, thick, cold wire is the best
conductor
How well a material conducts current is
an internal factor affecting resistance.
If you double the length of a wire, you cut
the resistance in half.
If you double the thickness of a wire, you
cut the resistance in half.
Superconductors have no measurable
resistance
The higher the temperature of the
conductor, the lower the resistance.
The resistance in a wire with less
thickness is less.
Thickness, length, and temperature are
internal factors that affect resistance.
When a light is first switched on the light
bulb's filament has a lower resistance
than after it gives off light for awhile.

User Tyler Day
by
8.1k points

1 Answer

3 votes

-- A shorter wire will allow electricity to move through at a higher rate than a longer wire . . . True, but "rate" is a poor way to say it. It should say "a higher current".

-- A short, thick, cold wire is the best conductor . . . True

-- How well a material conducts current is an internal factor affecting resistance . . . True

-- If you double the length of a wire, you cut the resistance in half . . . False. Double the length also means double the resistance.

-- If you double the thickness of a wire, you cut the resistance in half . . . True

-- Superconductors have no measurable resistance . . . True. They literally have NO resistance.

-- The higher the temperature of the conductor, the lower the resistance . . . False. Higher temperature means higher resistance, for almost all conductors.

-- The resistance in a wire with less thickness is less . . . False. We just said, up above in Question-#5, "If you double the thickness of a wire, you cut the resistance in half". Less thickness means more resistance. Just like a highway with fewer lanes.

-- Thickness, length, and temperature are internal factors that affect resistance . . . False. They affect resistance, but they're external factors.

-- When a light is first switched on the light bulb's filament has a lower resistance than after it gives off light for awhile . . . True. Look back 3 questions from here, where it says "Higher temperature means higher resistance".

User Zind
by
7.6k points

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