Question

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Answer 1

Answer:

1.two effects if electric current are :heating effect of electric current and magnetic effect of electric current.

2.Induction charging is a method used to charge an object without actually touching the object to any other charged object.

3.It create ozone which protect us from the harmful ultraviolet rays of the sun. Lighting helps plants to grow.

4.No, the plastic bag don't get attracted by the magnet, so they cannot be separate by an electromagnet . plastic bag are not magnetic material, only magnetic material like iron can be attracted by magnet.

5.Encyclopaedia Britannica Inc. A lightning rod and it's Accociated grounding conductor provide protection because they divert the current from non conducting parts of the structure, allowing it to the follow the path if least resistance and pass harmlessly through the rod and it's cable.

6.the induction of an electromotive force by the motion of a conductor across a magnetic field or by a change in magnetic flux in a magnetic field.

7. All motion are relative to such frame of references. saying that a body is at rest, which means that it is not in motion, merely means that it is being described with respect to a frame of reference that is moving together with the body.

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