Materials which do not allow electricity or electric current to pass through them are known as insulators. Rubber, wood, glass, plastic, pure water and dry air are examples of insulators.
Materials which do not allow electricity or electric current to pass through them are known as insulators. Rubber, wood, glass, plastic, pure water and dry air are examples of insulators.
Conductors are materials which allow electricity to pass through them. All metals can conduct electricity such as copper, aluminium, iron, gold, etc. Few non-metals such as graphite can also conduct electricity.
Conductors are materials which allow electricity to pass through them. All metals can conduct electricity such as copper, aluminium, iron, gold, etc. Few non-metals such as graphite can also conduct electricity.
The cactus plant possesses an extensive root system. The roots are very long that go very deep into the soil for absorbing water. Roots are also well developed.
The cactus plant possesses an extensive root system. The roots are very long that go very deep into the soil for absorbing water. Roots are also well developed.
Which state among the North-Eastern states has been fully surveyed for its land use?
(D) Assam
(D) Assam
See lessHow are the two terminals of a dry cell marked?
They are marked positive (+) and negative (–).
They are marked positive (+) and negative (–).
See lessWhat are insulators? Give examples.
Materials which do not allow electricity or electric current to pass through them are known as insulators. Rubber, wood, glass, plastic, pure water and dry air are examples of insulators.
Materials which do not allow electricity or electric current to pass through them are known as insulators. Rubber, wood, glass, plastic, pure water and dry air are examples of insulators.
See lessWhat are conductors? Give example.
Conductors are materials which allow electricity to pass through them. All metals can conduct electricity such as copper, aluminium, iron, gold, etc. Few non-metals such as graphite can also conduct electricity.
Conductors are materials which allow electricity to pass through them. All metals can conduct electricity such as copper, aluminium, iron, gold, etc. Few non-metals such as graphite can also conduct electricity.
See lessWhat is electric current?
The energy which is flowing through metallic wires is called electric current.
The energy which is flowing through metallic wires is called electric current.
See lessWrite any two properties of a magnet.
(i) Magnets attract objects such as iron and nickel. (ii) A freely suspended magnet always aligns in north-south direction.
(i) Magnets attract objects such as iron and nickel.
See less(ii) A freely suspended magnet always aligns in north-south direction.
Where are poles of a bar magnet situated?
Poles of a bar magnet are situated at the end points of a bar magnet.
Poles of a bar magnet are situated at the end points of a bar magnet.
See lessWhat are non-magnetic substances?
The materials which are not attracted by a magnet are called non-magnetic substances.
The materials which are not attracted by a magnet are called non-magnetic substances.
See lessWhat is a magnet?
A substance that can attract magnetic substances like iron, nickel etc. is called a magnet.
A substance that can attract magnetic substances like iron, nickel etc. is called a magnet.
See lessWhich type of leaves does cactus plant has and why?
The cactus plant possesses an extensive root system. The roots are very long that go very deep into the soil for absorbing water. Roots are also well developed.
The cactus plant possesses an extensive root system. The roots are very long that go very deep into the soil for absorbing water. Roots are also well developed.
See less