Which of the following statements are true concerning electromagnetic induction? Check all that apply. It is possible to induce
a current in a closed loop of wire located in a uniform magnetic field by either increasing or decreasing the area enclosed by the loop. It is possible to induce a current in a closed loop of wire without the aid of a power supply or battery. It is possible to induce a current in a closed loop of wire by changing the strength of a magnetic field enclosed by the wire. It is possible to induce a current in a closed loop of wire by change the orientation of a magnetic field enclosed by the wire.
2 answers:
Answer:
<u>Option: </u> All of them are correct.
Explanation:
- <u>Electromagnetic induction:</u>
The electromagnetic induction is the phenomenon or process in which the electromotive force e.m.f is generated inside the coil or the conductor through the movement of the magnetic field,E.
As due to the position of the conductor inside the electromagnetic field,E of any magnet can results in the e.m.f generation inside that very conductor.Leading to potential difference inside the circuit, as it leads to the polarity difference created between any two points inside the circuit or any closed loop.
- It is possible to induce a current in a closed loop of wire located in a uniform magnetic field by either increasing or decreasing the area enclosed by the loop.
- It is possible to induce a current in a closed loop of wire without the aid of a power supply or battery.
- It is possible to induce a current in a closed loop of wire by changing the strength of a magnetic field enclosed by the wire.
- It is possible to induce a current in a closed loop of wire by change the orientation of a magnetic field enclosed by the wire.
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Answer:
First Quarter and Third Quarter.
Explanation:
Tides are formed as a consequence of the differentiation of gravity due to the Moon across to the Earth sphere.
Since gravity variates with the distance:
(1)
Where m1 and m2 are the masses of the two objects that are interacting and r is the distance between them.
For example, seeing the image below, point A is closer to the Moon than point b, and at the same time the center of mass of the Earth will feel more attracted to the Moon than point B. Therefore, that creates a tidal bulge in point A and point B.
When the Sun and the Moon are alight with respect to the Earth, then the Sun tidal force contributes to the tidal force of the Moon over the Earth. That makes the high tides even higher (spring tides).
However, when the Sun is not in the same line than the Moon (the Moon is at 90° with respect to the Sun), then the low tides are higher and the high tides are lower. That scenario is known as neap tides.
Therefore, that happens when the Moon is at First Quarter and Third Quarter.
