7 An image formed by a concave
S. People obtain groundwater through
9. Three forms of water are
10. A forest is a purifier of
cannot be obtained on a screen
and
and
and
0-2 Write true or false.
1. An electromagnet does not attract a piece of iron.
2. To make a battery of two cells, the negative terminal of one cell is conne
negative terminal of the other cell.
3. Speed is the total distance covered divided by the total time taken.
4. We can obtain a real, enlarged and inverted image by a concave mirror.
5. Water from rivers is the only source for irrigation in the fields.
6. Rain is the ultimate source of water.
7. When the electric current through the fuse exceeds a certain limit, the fuse
and breaks.
8. An electromagnet does not attract a piece of iron.
9. An electric bell has an electromagnet.
Q-3 Write the experiments.
(1.) To show the electricity and magnetism are related.
Answers
Answer:
7) Virtual Image
8) Wells and Hand Pumps
9) Solid, Liquid & Gas
10) Air and water from the decaying leaves and animal droppings
1) False:- Working of an electromagnet is based on the magnetic effect of electric current. An electromagnet behaves as a magnet when current passes through it. Hence, it will attract a piece of iron.
2) False:- To make a battery of two cells, the negative terminal of one cell is connected to the positive terminal of the other cell.
3) True
4) True
5) False:- Water from rivers is the only source of irrigation in the face. No, this is also incorrect as we know we get water from well and perm and dams as the other source of irrigation.
6) True
7) True
8) False:- Working of an electromagnet is based on the magnetic effect of electric current. An electromagnet behaves as a magnet when current passes through it. Hence, it will attract a piece of iron.
9) True
1) Electricity and magnetism are closely related. Flowing electrons produce a magnetic field, and spinning magnets cause an electric current to flow. Electromagnetism is the interaction of these two important forces.