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Mademuasel [1]
3 years ago
6

Visually, how can you distinguish between an ac and dc power supply?

Physics
2 answers:
anyanavicka [17]3 years ago
8 0

Alternating current (AC), is the form of electrical energy that consumers use whenever they plug televisions, fans, bulb, AC, and any other appliances into a socket.

Direct Current (DC)

There are many uses of direct current (DC). It can be used to charge battery and large power supplies for motors and electronic system.

<h2>Further Explanation</h2>

Alternating Current is the form whereby electric power is provided for residences and businesses. Alternating current may be produced using a device known as alternator.  

With Alternating current (AC), electrons don’t really flow in AC; they vibrate from positive to negative and back from negative to positive. They really vibrate back and forth. In AC, there is no continuous vibration unlike in DC.

Direct current (DC)

Direct current power in large quantities can be used in production of aluminum. It can also be used in other electrochemical processes.

With Direct current (DC), there is a movement of electron in one direction, that is, from negative (-) to positive (+). It is a constant current that flows continuously until it is switch off or the source of its power runs out.  An example of a DC power is a battery.

They may flow throw a conductor such as wire; they can also flow through insulators, semiconductors or vacuum as in ion beams or electron.  

LEARN MORE:

  • AC power and DC power brainly.com/question/13033819

KEYWORDS:

  • direct current
  • alternating current
  • battery
  • appliances
  • power supply
Temka [501]3 years ago
5 0

Answer:

By the use of slow motion camera.

Explanation:

Visually, it is very hard to differentiate between an ac and dc power supply. But Since, we that In Ac supply polarity changes 100 times in a second ( because frequency of ac supply is 50 Hz generally). Whereas, Dc gives a steady power supply. So, in slow motion camera we can easily capture the flickering light tubes which won't happen in case of dc supply.

You might be interested in
Question 3 (5 points)
Elan Coil [88]

True: when there is an angle between force and displacement, W=Fd cos \theta

Explanation:

The work done by a force when pushing/pulling an object is given by the equation

W=Fd cos \theta

where

F is the magnitude of the force

d is the displacement of the object

\theta is the angle between the direction of the force and of the displacement

We have two extreme cases:

- When the force is parallel to the displacement, then \theta=0^{\circ} and cos \theta = 1, so the work done is maximum and simply becomes

W=Fd

- When the force is perpendicular to the displacement, then \theta=90^{\circ} and cos \theta =0, so the work done is zero.

Learn more about work:

brainly.com/question/6763771

brainly.com/question/6443626

#LearnwithBrainly

7 0
3 years ago
Which of the following statements is FALSE about collisions? (Consider Newton's Laws an the Conservation of Momentum.)
pantera1 [17]

<u>The following statements are false about collisions: </u>

  • The velocity change of two respective objects involved in a collision will always be equal.
  • Total momentum is always conserved between any two objects involved in a collision.

Answer: Option B, and D

<u>Explanation: </u>

In any collisions, equal amount of net force will be acted upon the colliding objects due to the third law of Newton, irrespective of the significance difference in mass of the objects. Similarly, they can also have different acceleration values during collision of two objects if the masses are identical.

But the statements regarding the equal change in velocity of two objects respectively involved in collision always is false, as the conservation of momentum is applicable for isolated system only. So it is true for only isolated system and not in all the systems.

The same reason goes for falsifying the fourth statement which states that total momentum is always conserved between two objects involved in a collision as this statement is only true for isolated system where the conservation of momentum can be applied. Thus the second and fourth statement is false regarding collision.

8 0
3 years ago
An astronaut on a strange planet finds that she can jump a maximum horizontal distance of 16.0 m if her initial speed is 3.60 m/
Airida [17]
The maximum height that is reached by an object thrown or jumped at a certain initial velocity can be calculated through the equation,

   2ad = Vf² - Vi²

Vf is zero (0) in this equation because this is the point at the velocity at the maximum height of the object.

Substituting the known values,
  2(a)(-16) = 0 - (3.6)²

The value of a from the equation is 0.405 m/s².

<em>Answer: 0.405 m/s²</em>
7 0
3 years ago
What would be the y-component of a velocity vector that had a
valentina_108 [34]

Answer:

18.5 m/s

Explanation:

Just did it on EdPuzzle

6 0
3 years ago
There are four springs stretched by the same mass.
brilliants [131]

Spring C stretches 100 cm.

Explanation:

The spring constant is simply the stiffness of the spring. The higher the spring constant the more stiff the spring is.

Spring constant shows the force needed to stretch a spring from it's equilibrium position. If a material requires more force to cause it to stretch, it will have a high spring constant.

          According to hooke's law "the force needed to extended an elastic material is directly proportional to its extension"

          F = ke

   k is the spring constant

   e is the extension

We see that the spring that stretches by 100 is the less stiff compared to other springs. It has the smallest spring constant.

Learn more;

Force brainly.com/question/8882476

#learnwithBrainly

8 0
3 years ago
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