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
Masteriza [31]
3 years ago
8

How many charges are required to have an electric field

Physics
1 answer:
Liono4ka [1.6K]3 years ago
7 0
One charge is enough in order to have an electric field. 

In fact, every charge generates an electric field: for example, the electric field generated by a single point positive charge is radial, as shown in the attached figure. More complicate electric field configurations can be obtained adding charges or using more complicate charge distributions, but one charge is enough to have an electric field.


You might be interested in
Find the electric energy density between the plates of a 225-μF parallel-plate capacitor. The potential difference between the p
PSYCHO15rus [73]

Answer:

Energy density will be 14.73 J/m^3

Explanation:

We have given capacitance C=225\mu F=225\times 10^{-6}F

Potential difference between the plates = 365 V

Plate separation d = 0.200 mm 0.2\times 10^{-3}m

We know that there is relation between electric field and potential

E=\frac{V}{d}, here E is electric field, V is potential and d is separation between the plates

So E=\frac{V}{d}=\frac{365}{0.2\times 10^{-3}}=1825000N/C

Energy density is given by E=\frac{1}{2}\varepsilon _0E^2=\frac{1}{2}\times 8.85\times 10^{-12}\times (1.825\times 10^6)^2=14.73J/m^3

5 0
3 years ago
Circle the letter that corresponds to the best answer.
IrinaK [193]

Answer:

C) China, or "Our largest trade deficit is with China"

Explanation:

China is currently our largest goods trading partner. 85% of goods are imported from China to America. The most prominent goods among the finished products exported from China were consumer electronics, data processing technologies, clothing, other textiles, optical gear, and medical equipment.

6 0
2 years ago
Which of the following is the best example of kinetic energy? A book sitting on a bookshelf A golfer preparing to putt the ball
Phantasy [73]

sorry if im wrong but

D. A satellite orbiting the Earth.

6 0
3 years ago
Read 2 more answers
Adam uses a fixed pulley, such as the one shown below, to lift an object. Adam applies an input force to the pulley as he pulls
stira [4]
When Adam applies a ‘pull’ force on the pulley, there is an output force that the pulley lets out, directly pulling the object with it. We cannot always pull up objects with our bear hands, no matter how much force we apply. Which is why pulleys allow us to apply the force and pulleys do the work of pulling the objects for us, since work and force come hand in hand.
6 0
3 years ago
Edward with it gathering physical evidence at the scene of a crime. He finds a fingerprint pressed into the wax of the candle. W
muminat

Answer:trace

Explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • A train travels 250 km westward from Carthage to Johnson City. The train arrives 2.5 hours after it left. What was the average v
    5·1 answer
  • Part 1: A rope has one end tied to a vertical support. You hold the other end so that the rope is horizontal. If you move the en
    12·1 answer
  • By what factor is the heat flow increased if a window 0.550 mm on a side is inserted in the door? The glass is 0.450 cmcm, and t
    11·1 answer
  • Suzie stands on a pedestal and touches the dome of a running Van de Graaf generator. In a few seconds she observes her hair stan
    9·2 answers
  • The laboratory is based on the assumption that at the two points of the motion being considered, the mass is at rest. What kind
    13·1 answer
  • Which shows a vector quantity in the given situation. The airplane was flying 500 miles per hour to west from New York to Califo
    12·2 answers
  • Need help please !!!! Hurry
    10·2 answers
  • 1. You take a trip to Philadelphia to see a concert. Your older friend drives you there. The
    14·1 answer
  • The image shows a dam.
    14·2 answers
  • If the mass of an object is 14 lbm, what is its weight, in lbf, at a location where g = 32.0 ft/s2?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!