Question

Draw a rough figure of a simple electromagnet. How can we find out if it is magnetic or not?
Plz draw in a notebook and attach a picture of it.​

Answer 1

Answer:

One or more thin areas present in the exine of pollen grains are known as germ pores. The germ pores are apertures in the exine layer of the pollen grain where the sporopollenin is absent. The germ pore helps in the formation of the pollen tube and the release of the male gametes during fertilisation.jehhdb

Answer 2

We can find out it is magnetic or not by the following activity:

(Electromagnet is formed by a solenoid that carries an electric current, thus forming a magnetic field.)

• Prepare a solenoid by wrapping insulated copper wire closely in a cylindrical shape around a matchbox.
• Connect this solenoid to an electric circuit having a battery and key. Also, place a small compass inside the matchbox as it has the magnetic needle.
• Close the key so that the electric current is established in this solenoid.
• At this point, the magnetic needle in the compass deflects. Moreover, on switching off the current, the magnetic needle deflects back to its original position.
• This proves that a magnetic field is established in the electromagnet.

(Figure of the electromagnet is attached in the figure.)