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Solnce55 [7]
3 years ago
8

Which of the following is true about Electromagnets?

Physics
1 answer:
babunello [35]3 years ago
6 0

Answer:

A. When the current is shut off, the magnetic field disappears.

Explanation:

Electromagnetism is a method in which magnetism is obtained from an electric current. It is an artificial way of producing a strong magnetic fields due to the flow of current.

Since the magnetic effect observed is due to the flow of an electric current, so when the current is shut off, the magnetic field disappears.

It has a wide range of applications in manufacturing industries, electric bells, induction coil etc.

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Q2. You push a crate up a ramp with a force of 10 N. Despite your pushing, the crate slides down the ramp 4 m. How much work did
Ksivusya [100]

Answer:

40 J

Explanation:

From the question given above, the following data were obtained:

Force (F) = 10 N

Distance (s) = 4 m

Workdone (Wd) =?

Work done is simply defined as the product of force and distance moved in the direction of the force. Mathematically, we can express the Workdone as:

Workdone = force × distance

Wd = F × s

With the above formula, we can obtain the workdone as follow:

Force (F) = 10 N

Distance (s) = 4 m

Workdone (Wd) =?

Wd = F × s

Wd = 10 × 4

Wd = 40 J

Thus, 40 J of work was done.

5 0
3 years ago
Which correctly lists three places that fresh water is found?
Tju [1.3M]
The answer is underground
4 0
3 years ago
Read 2 more answers
What's the name of the compound Kl?
Nat2105 [25]

Answer: Potassium iodide

Explanation: their you go

3 0
3 years ago
Read 2 more answers
What are the differences between the practical and the ideal pendulum​
ankoles [38]

lf a heavy point mass is suspended by a weightless, inextensible and perfectly flexible string from a rigid support, then this arrangement is called simple pendulum.

In practice, however, these requirements cannot be fulfilled. So we use a practical pendulum.

A practical pendulum consists of a small metallic solid sphere suspended by a fine silk thread from a rigid support. This is the practical simple pendulum which is nearest to the ideal simple pendulum.

Note :

The metallic sphere is called the bob.

When the bob is displaced slightly to one side from its mean position and released, it oscillates about its mean position in a vertical plane.

4 0
3 years ago
If a proton were released in the electric field above, what direction would it move?
Afina-wow [57]

Answer:

d because the proton would move towards the negative plate

Explanation:

5 0
3 years ago
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