1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
igor_vitrenko [27]
3 years ago
12

At room temperature what is the strength of the electric field in a 12-gauge copper wire (diameter 2.05 mm that is needed to cau

se a 2.75 a current to flow?
Physics
1 answer:
Dima020 [189]3 years ago
6 0
Electric field strength = resistivity of copper x current density
where
p= 1.72 x 10^-8 <span>ohm meter
diameter = 2.05mm=.00205 m
current = 2.75 A
</span>get first the current density:
current density = current/ cross section area
find the cross section area
cross section area = pi.(d/2)^2;  
cross section = 3.3 006x10-6 m^2
substitute the values 
current density = 2.75A/3.3006x 10-6m^2
current density=35.55 x1 0^2 A/m^2
Electric field stregnth =1.72 x 10^-8 ohm meter x 35.55 x10^2 A/m^2
Electric field stregnth= 46.415 Volts/m

The electric field strength of copper is 46.415 V/m.


You might be interested in
In what state of matter does oxygen exist at room temperature
denis-greek [22]
Oxygen is a gas a room temperature.


4 0
3 years ago
Read 2 more answers
What kind of weather is signaled by cumulus clouds
Novay_Z [31]
Cumulonimbus clouds are associated by severe weather. They are thunderstorm clouds that bring heavy rain, snow, hail, lightning and even tornadoes.
5 0
3 years ago
JOSEPH JOGS FROM END A TO OTHER END B OF A straight 300 m road in 2 minutes 30 seconds and then turns around and jogs 100 m back
zzz [600]
(a) The average speed from A to B would be 1.76 metre per second and the average velocity from A to B would also be 1.76 metre per second 

<span>(b) The average speed from A to C would be 1.73 metre per second and the average velocity from A to C would be 0.87 metre per second</span>
3 0
3 years ago
Which of the following surfaces reflects the most light
Gre4nikov [31]

Answer:

D

Explanation:

it could be the yellow cloth but we see are shadow on the sidewalk most of the time and shadows are made from reflecting light so your answer should be D

3 0
3 years ago
Read 2 more answers
What is the relation between the direction of electric field and equipotential line at the same point
gavmur [86]

Answer:

The direction of electric field and equipotential line at the same point are always PERPENDICULAR TO THE ELECTRIC FIELD.

Explanation:

Equipotential surface is a three dimensional part of equipotential lines.

Equipotential lines are a type of contour lines that is use to trace lines that have the same altitude on the map and the altitude is the electric potential.

Equipotential lines are always perpendicular to electric potential because the lines creates three dimension equipotential surface.

5 0
3 years ago
Other questions:
  • Two ships of equal mass are 110 m apart. What is the acceleration of either ship due to the gravitational attraction of the othe
    13·1 answer
  • Which type(s) of electromagnetic radiation do human bodies emit? Which type(s) can our senses detect?
    13·1 answer
  • A horizontal water jet at 70˚F issues from a circular orifice in a large tank. The jet strikes a vertical plate that is normal t
    11·1 answer
  • You are standing on a sheet of ice that covers the football stadium parking lot in Buffalo; there is negligible friction between
    9·1 answer
  • QuestIuI
    10·1 answer
  • Where is the us constitution does it mention anything about local governments
    8·1 answer
  • A bullet of mass 120g is fired horizontally into a fixed wooden block with a speed of 20m\s. The bullet is brought to rest in a
    10·1 answer
  • Use a variation model to solve for the unknown value. Use as the constant of variation. The stopping distance of a car is direct
    8·1 answer
  • Question 1
    10·1 answer
  • Erwin Schrödinger developed the quantum model of the atom. What scientific knowledge was necessary for Schrödinger’s work?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!