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
WARRIOR [948]
3 years ago
7

Which device uses AC current to operate?

Physics
2 answers:
sweet [91]3 years ago
6 0

Answer

Correct option is B that is Desktop computer

Explanation

Option A

This option is not correct because in a Locomotive train steam, diesel or batteries are used.

Option B

It is Correct option because in desktop a transformer is there which uses AC current. Most of us have desktop and we used AC current to operate it we don't have any other option to operate a desktop except AC current

Option C

This is not correct option because in  a car we used petrol, deisel, gas or  DC batteries.

Option D

Option D is not correct option because to operate portable media player we can use both  alternating current or batteries

Option

This is not correct option because in  flashlight we uses DC batteries

Hope this answer will help you


xz_007 [3.2K]3 years ago
5 0
B. Desktop computer

A Locomotive train runs on steam, diesel, or batteries

a car either gas or electric uses DC batteries

portable media player can use AC or batteries

A flashlight uses DC batteries

The computer actually has a transformer built into it which uses AC current
You might be interested in
At a certain location, Earth has a magnetic field of 0.60 ✕ 10−4 T, pointing 75° below the horizontal in a north-south plane. A
saveliy_v [14]

Answer with Explanation:

We are given that

Magnetic field,B=0.6\times 10^{-4} T

\theta=75^{\circ}

Length of wire,l=15 m

Current,I=19 A

a.We have to find the magnitude of magnetic force and direction of magnetic force.

Magnetic force,F=IBlsin\theta

Using the formula

F=0.6\times 10^{-4}\times 15\times 19sin75

F=16.5\times 10^{-3} N

Direction=tan\theta=cot(90-75)=tan15^{\circ}

\theta=15^{\circ}

15 degree above the horizontal  in the northward direction.

5 0
3 years ago
Write an expression for the potential energy UD of a particle when it is at a distance D from the force center, in terms of B an
nadezda [96]

Answer:

E+mc+UD-3

Explanation:

7 0
4 years ago
Gravity is greater when there is
Artist 52 [7]
More mass and less difference
8 0
3 years ago
Read 2 more answers
A football kicker kicks a ball with a mass of .42 kg. The average acceleration of the football was 14.8 m/s squared. How much fo
mrs_skeptik [129]

To find the force we use the formula,

F = ma , where m is mass and a acceleration

Using the formula,

F = ma

F = 0.42 x 14.8

F = 6.216 N / 6.22 N

Hope you liked the answer !

4 0
3 years ago
A closed container initially holds 50 monatomic Aparticles that have a combined energy of 480 units. After 100 monatomic B parti
Molodets [167]

Answer:

"8 units" is the appropriate answer.

Explanation:

According to the question,

Throughout equilibrium all particles are of equivalent intensity, and as such the integrated platform's total energy has been uniformly divided across all individuals.

Now,

The total energy will be:

= 480+720

= 1200 \ units

The total number of particles will be:

= 50+100

= 150

hence,

Energy of each A particle or each B particle will be:

= \frac{1200}{150}

= 8 \ units

5 0
3 years ago
Other questions:
  • Order the steps to describe how information is sent. A signal is produced. A signal is seen, heard, or used. Radio waves are mod
    10·1 answer
  • Which phase of matter does not conduct heat well?
    8·2 answers
  • A non conducting sphere of radius 0.04 m has a charge of 5.0 × 10^-9 C deposited on it. CalculateThe magnitude of the electric f
    11·1 answer
  • A coaxial cable carries a current I =0.02A through a wire of radius Rw=.2mmin one direction and an identical current through the
    13·1 answer
  • Please help!!! A river has a constant current of 3 km per hour. If a motorboat, capable of maintaining a constant speed of 20km
    9·1 answer
  • An out-of-control train is racing toward the Metropolis terminal train station - only Superman can help. The train has a mass of
    11·1 answer
  • Clarisse had three substances. A white substance was waxy and malleable. A red crystal was translucent, and it cracked when she
    14·2 answers
  • Study the arrow that is circled in the image.
    15·2 answers
  • Think about a typical school day. In the space provided below, describe how each of the different forms of energy we have learne
    7·2 answers
  • How polar bear can survive in the polar region<br>​
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!