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
Aneli [31]
3 years ago
9

How is an electromagnet different from a magnet?

Physics
1 answer:
RSB [31]3 years ago
5 0

Answer: b . An electromagnet can be changed by changing the amount of current.

Explanation:

In an <u>electromagnet</u>, <u>the magnetic field is generated by an electric current in a coil of wire which reinforces an iron core. But when the electric current applied on the mentioned core is disconnected, it immediately loses its magnetization</u>. This also means that the intensity of the magnetic field can be controlled (increased or decreased) by changing the intensity of the electric current flowing through the nucleus.

On the other hand, the <u>permanent magnet</u> <u>does not depend on electric current to magnetize</u>, because <u>due to its composition (a ferromagnetic material)</u> the magnetization capacity continues even after not being in contact with an external magnetic field.

You might be interested in
What is the difference between the law of conservation of energy and conserving energy
babymother [125]
<span>law of conservation of </span>energy<span> is </span><span><span>states that energy of the universe remains constant cant be created nor destroyed and conserving energy is not using as much power as you was like trying to make power bill lower while law of conservation is constant </span> </span>


6 0
3 years ago
A centripetal force causes circular motion because it accelerates an object
MAVERICK [17]

The answer is option A.

Centripetal force is always directed towards the centre and does not change the speed of the body,but there is a change in the direction.

6 0
3 years ago
Read 2 more answers
EMERGENCY! PLEASE HELP!
hichkok12 [17]

Answer: Volume = 1080m^3

Explanation:

Given that the prism has a 15 m by 18 m rectangular base and a height of 4 m

Volume is the product of length, breath and height. That is

Volume = L × B × H

Where

L = 18 m

B = 15m

H = 4m

Using the formula above gives:

Volume V = 18 × 15 × 4

V = 1080 m^3

8 0
3 years ago
What is currently the most supported theory about the future of the universe
mamaluj [8]

the answer is B! it would continue to expand.....just took the test XD

8 0
3 years ago
Read 2 more answers
Which energy output objects work with the turbine
viktelen [127]

Answer:

The energy output object that works with the turbine is the alternator (generator)

Explanation:

In energy generation the turbine receives input energy from high pressured steam, high energy water etc. Which impinges and turn the blades of the turbine, this turbine is connected by means of a shaft to the alternator that converts the rotational motion of the shaft to electrical energy through Electro magnetic induction principles and also outputs the energy for consumption.

6 0
3 years ago
Other questions:
  • The amount of energy required to raise the temperature of 1 kilogram of a substance by 1 Kelvin is called its
    10·2 answers
  • A substance has a melting point of 800ºC and a boiling point of 1465ºC. The substance is most likely
    6·1 answer
  • Can kintic friction affect mechanical energy
    7·1 answer
  • Apply the general results obtained in the full analysis of motion under the influence of a constant force in Section 2.5 to answ
    9·1 answer
  • What is the correct answer choice? PLEASE HELP
    9·1 answer
  • The current in a series circuit is 19.3 A. When an additional 7.40-Ω resistor is inserted in series, the current drops to 13.4 A
    10·1 answer
  • You have What needs to be done to this circuit so that the light bulb lights up?
    14·1 answer
  • A motorcycle traveling south reaches a speed of 38.0 m/s. It then begins uniform negative acceleration and comes to rest after 7
    13·1 answer
  • A small rubber wheel is used to drive a large pottery wheel. The two wheels are mounted so that their circular edges touch. The
    8·1 answer
  • Why does a stream or river change direction when going down a steep mountain
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!