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bulgar [2K]
3 years ago
11

What is an advantage of using an electromagnet rather than a regular magnet?

Physics
2 answers:
Naddik [55]3 years ago
7 0
<h3><u>Answer;</u></h3>

<em>The advantage of using electromagnet over a regular magnet is that </em><u><em>the magnetic field or the strength of the magnet can be quickly adjusted by controlling the amount of electric current in the coil.</em></u>

<h3><u>Explanation;</u></h3>
  • <em><u>Electromagnets are made by winding a wire through a magnetic material such as soft iron core making a coil, and then passing electric current through the coil thus making the soft iron core magnetic. </u></em>
  • <u><em>The strength of the electromagnet depends on the number of coils and also the size of the electric current through the coil.</em></u>
  • Permanent magnets on the other hand do not require power but depends on the type of material used to make it.
  • Therefore,<em><u> its advantageous to use electromagnets as compared to using permanent magnets since the strength of the electromagnet can be easily adjusted by regulating the amount of current flowing through the coils.</u></em> Thus, the electromagnet can be adjusted for have different levels of magnetic fields.
alexdok [17]3 years ago
5 0
<span>The advantage of using an electromagnet rather than a regular magnet is that an electromagnet is stronger and you can control the power of the magnet. </span>
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Look at the attachment or go online and search the question to get the answers you need


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3 years ago
if a 5-kg bowling ball is projected upward witha velocity of 2.0 m/s, then what is the recoil velocity of the Earth(mass=6.0×10^
vitfil [10]

by the concept of momentum conservation we can say

if net force on a system of mass is ZERO then its momentum will remain conserved

Here a ball is projected upwards so if we take Ball + Earth as a system then total momentum of the system will remain conserved

Initially when ball is on the surface of earth the system has zero momentum and hence we can say after throwing the ball momentum of earth + ball must be zero

now using same equation we can say

P_{ball} + P_{earth} = 0

m_1v_1 + m_2v_2= 0

given that

m_1 = 5 kg

v_1 = 2 m/s

m_2 = 6 * 10^{24} kg

from above equation velocity of earth will be

v_2 = \frac{m_1 v_1}{m_2}

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3 0
3 years ago
An Alpha particle moving in north direction give reasons​
Mazyrski [523]

Your question has been heard loud and clear.

An alpha particle , can move in any direction randomly. But with a magnetic field , we can deflect the alpha particle in any direction we want.

So , the magnetic field must be placed to the west of the alpha particle , so that the particle gets deflected and moves towards the north direction.

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7 0
3 years ago
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A system has 4 independent and identical motors, in order for the system to work, at least one of the motors must operate. Each
grin007 [14]

Answer:

The system's Mean Time to Failure is 1,041.\bar 6 hours

Explanation:

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The failure rate of each motor, λ = 0.002 failures per hour

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The Mean Time to Failure for a parallel system of four identical components is given as follows;

MTTF = \dfrac{1 }{\lambda} \times \left (1 + \dfrac{1}{2} +  \dfrac{1}{3} + \dfrac{1}{4} \right)

Which gives;

MTTF = \dfrac{1 }{0.002} \times \left (1 + \dfrac{1}{2} +  \dfrac{1}{3} + \dfrac{1}{4} \right) = 1,041.\bar 6

The system's Mean Time to Failure = 1,041.\bar 6 hours.

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