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zavuch27 [327]
2 years ago
10

A current-carrying ohmic metal wire has a cross-sectional area that gradually becomes smaller from one end of the wire to the ot

her. The current has the same value for each section of the wire, so charge does not accumulate at any one point.(ii) How does the resistance per unit length vary along the wire as the area becomes smaller? Choose from the same possibilities as in part (i).
Physics
1 answer:
devlian [24]2 years ago
8 0

The resistance per unit length decreases along the wire as the area becomes smaller.

<h3>What is the resistance per unit length of a wire?</h3>

The resistance per unit length of a wire is the a constant know as the conductivity of a wire.

The conductivity of a wire is a measure of the resistance offered per unit length of a wire. It increases with increase in the area of a wire and decreases with decrease in the area of a unit length of wire.

It is the inverse of the resistivity of a wire.

In conclusion, the resistance per unit length is directly proportional to the area of a unit length of wire.

Learn more about resistance per unit length at: brainly.com/question/28165599

#SPJ4

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A crash test dummy is inside a test car moving at 55 km/h. How fast is the dummy moving relative to the seat he is sitting in?
kvasek [131]

The dummy is moving with a speed 0 km/h relative to the seat in which it is sitting.

If the relative speed was non-zero, the dummy would move away from its seat, which contradicts the problem formulation.

7 0
3 years ago
Read 2 more answers
SI Prefix Meaning
LenKa [72]
- deci: one-tenth.
- centi: one-hundredth.
- nano: one-billionth.

hope this helps :)
7 0
3 years ago
UUUURGENT I NEED HELP I WILL GIVE BRAINLEST
Sphinxa [80]

the best way that I can explain this is the force of gravity the mass of the skater and the board increase the kinetic energy cuz of the force of gravity
hope this helps and if it dosen't then sorry
3 0
3 years ago
A 2.3 m long wire weighing 0.075 N/m is suspended directly above an infinitely straight wire. The top wire carries a current of
ZanzabumX [31]

Answer:

Explanation:

Magnetic field near current carrying wire

= \frac{\mu_0}{4\pi} \frac{2i}{r}

i is current , r is distance from wire

B =  10⁻⁷ x \frac{2\times49}{r}

force on second wire per unit length

B I L , I is current in second wire , L is length of wire

=  10⁻⁷ x \frac{2\times49}{r} x 33 x 1

= 3234 x \frac{10^{-7}}{r}

This should balance weight of second wire per unit length

3234 x \frac{10^{-7}}{r} = .075

r = \frac{3234}{.075} x 10⁻⁷

= .0043 m

= .43 cm .

5 0
4 years ago
M A sinusoidal wave on a string is described by the wave function
IceJOKER [234]

The frequency of the wave is determined as 7.96 Hz.

<h3>Frequency of the wave</h3>

The frequency of the wave is calculated as follows;

y = A sin(ωt - kx)

where;

  • A is amplitude of the wave
  • ω is angular speed of the wave

ω = 2πf

f = ω/2π

f = (50)/(2π)

f = 7.96 Hz

Thus, the frequency of the wave is determined as 7.96 Hz.

Learn more about frequency of waves here: brainly.com/question/6297363

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5 0
2 years ago
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