Without the help of insulators, the use of electrical tools like pliers and screwdrivers will give electric shock to user. Wood and plastics are insulators and help in avoiding direct contact with electric current. When electricians touch these live electric wires with these tools covered with plastRead more
Without the help of insulators, the use of electrical tools like pliers and screwdrivers will give electric shock to user. Wood and plastics are insulators and help in avoiding direct contact with electric current. When electricians touch these live electric wires with these tools covered with plastic or rubber, current does not flow in their body making safer them from any accident.
Electricians frequently touch copper wires or they may accidentally come in contact with live wires (wires carrying current). Since human body is a good conductor, electricians may get shock. Rubber is an insulator. To prevent themselves from electric shock or flow of current, the electricians use rRead more
Electricians frequently touch copper wires or they may accidentally come in contact with live wires (wires carrying current). Since human body is a good conductor, electricians may get shock. Rubber is an insulator. To prevent themselves from electric shock or flow of current, the electricians use rubber gloves while repairing.
Since the object allows current to flow and completes the circuit and makes bulb to glow. It means the object is a conductor of electricity. https://www.tiwariacademy.com/ncert-solutions/class-6/science/chapter-12/
Since the object allows current to flow and completes the circuit and makes bulb to glow. It means the object is a conductor of electricity.
A switch is a simple device that either breaks the circuit or completes it. The switches used in lighting of electric bulbs and other devices in homes work on the same principle. In radio, TV, mobiles, torch and electric toys have in built switches. https://www.tiwariacademy.com/ncert-solutions/clasRead more
A switch is a simple device that either breaks the circuit or completes it. The switches used in lighting of electric bulbs and other devices in homes work on the same principle. In radio, TV, mobiles, torch and electric toys have in built switches.
No, to see the reflection, source of light is required. We can see only in the presence of light. https://www.tiwariacademy.com/ncert-solutions/class-6/science/chapter-11/
No, to see the reflection, source of light is required. We can see only in the presence of light.
A cylinder object can cast shadows in two ways. When the top circular view faces the shining object, a circular shape shadow is formed. When its curved side faces the shining object, it casts a rectangular shadow. https://www.tiwariacademy.com/ncert-solutions/class-6/science/chapter-11/
A cylinder object can cast shadows in two ways. When the top circular view faces the shining object, a circular shape shadow is formed. When its curved side faces the shining object, it casts a rectangular shadow.
Opaque : A piece of rock, a sheet of aluminium, a mirror, a wooden board, a CD, a piece of red hot iron, an umbrella, a lighted fluorescent tube, a wall, a sheet of carbon paper, the flame of a gas burner, a sheet of cardboard, a lighted torch, kerosene stove, sun, firefly, moon. Transparent : Air,Read more
Opaque : A piece of rock, a sheet of aluminium, a mirror, a wooden board, a CD, a piece of red hot iron, an umbrella, a lighted fluorescent tube, a wall, a sheet of carbon paper, the flame of a gas burner, a sheet of cardboard, a lighted torch, kerosene stove, sun, firefly, moon.
Transparent : Air, water.
Translucent : A sheet of polythene, smoke, a sheet of plane glass, fog, a sheet of cellophane, a wire mesh.
Luminous : A piece of red hot iron, a lighted fluorescent tube, the flame of a gas burner, a lighted torch, sun, firefly.
Non – luminous: Air, water, a piece of rock, a sheet of aluminium, a mirror, a wooden board, a sheet of polythene, a CD, smoke, a sheet of plane glass, fog, an umbrella, a wall, a sheet of carbon paper, a sheet of cardboard, a sheet of cellophane, a wire mesh, kerosene stove, moon.
The handles of the tools like screwdrivers and pliers used by electricians for repair work usually have plastic or rubber covers on them. Can you explain why?
Without the help of insulators, the use of electrical tools like pliers and screwdrivers will give electric shock to user. Wood and plastics are insulators and help in avoiding direct contact with electric current. When electricians touch these live electric wires with these tools covered with plastRead more
Without the help of insulators, the use of electrical tools like pliers and screwdrivers will give electric shock to user. Wood and plastics are insulators and help in avoiding direct contact with electric current. When electricians touch these live electric wires with these tools covered with plastic or rubber, current does not flow in their body making safer them from any accident.
https://www.tiwariacademy.com/ncert-solutions/class-6/science/chapter-12/
See lessWhy should an electrician use rubber gloves while repairing an electric switch at your home? Explain.
Electricians frequently touch copper wires or they may accidentally come in contact with live wires (wires carrying current). Since human body is a good conductor, electricians may get shock. Rubber is an insulator. To prevent themselves from electric shock or flow of current, the electricians use rRead more
Electricians frequently touch copper wires or they may accidentally come in contact with live wires (wires carrying current). Since human body is a good conductor, electricians may get shock. Rubber is an insulator. To prevent themselves from electric shock or flow of current, the electricians use rubber gloves while repairing.
https://www.tiwariacademy.com/ncert-solutions/class-6/science/chapter-12/
See lessUsing the “conduction tester” on an object it was found that the bulb begins to glow. Is that object a conductor or an insulator? Explain.
Since the object allows current to flow and completes the circuit and makes bulb to glow. It means the object is a conductor of electricity. https://www.tiwariacademy.com/ncert-solutions/class-6/science/chapter-12/
Since the object allows current to flow and completes the circuit and makes bulb to glow. It means the object is a conductor of electricity.
https://www.tiwariacademy.com/ncert-solutions/class-6/science/chapter-12/
See lessWhat is the purpose of using an electric switch? Name some electrical gadgets that have switches built into them.
A switch is a simple device that either breaks the circuit or completes it. The switches used in lighting of electric bulbs and other devices in homes work on the same principle. In radio, TV, mobiles, torch and electric toys have in built switches. https://www.tiwariacademy.com/ncert-solutions/clasRead more
A switch is a simple device that either breaks the circuit or completes it. The switches used in lighting of electric bulbs and other devices in homes work on the same principle. In radio, TV, mobiles, torch and electric toys have in built switches.
https://www.tiwariacademy.com/ncert-solutions/class-6/science/chapter-12/
See lessFill in the blanks: An electric cell has _______________ terminals.
An electric cell has two terminals. https://www.tiwariacademy.com/ncert-solutions/class-6/science/chapter-12/
An electric cell has two terminals.
https://www.tiwariacademy.com/ncert-solutions/class-6/science/chapter-12/
See lessFill in the blanks: A device that is used to break an electric circuit is called _______________.
A device that is used to break an electric circuit is called switch. https://www.tiwariacademy.com/ncert-solutions/class-6/science/chapter-12/
A device that is used to break an electric circuit is called switch.
https://www.tiwariacademy.com/ncert-solutions/class-6/science/chapter-12/
See lessIn a completely dark room, if you hold up a mirror in front of you, will you see a reflection of yourself in the mirror?
No, to see the reflection, source of light is required. We can see only in the presence of light. https://www.tiwariacademy.com/ncert-solutions/class-6/science/chapter-11/
No, to see the reflection, source of light is required. We can see only in the presence of light.
https://www.tiwariacademy.com/ncert-solutions/class-6/science/chapter-11/
See lessCan you think of creating a shape that would give a circular shadow if held in one way and a rectangular shadow if held in another way?
A cylinder object can cast shadows in two ways. When the top circular view faces the shining object, a circular shape shadow is formed. When its curved side faces the shining object, it casts a rectangular shadow. https://www.tiwariacademy.com/ncert-solutions/class-6/science/chapter-11/
A cylinder object can cast shadows in two ways. When the top circular view faces the shining object, a circular shape shadow is formed. When its curved side faces the shining object, it casts a rectangular shadow.
https://www.tiwariacademy.com/ncert-solutions/class-6/science/chapter-11/
See lessClassify the objects or materials given below as opaque, transparent or translucent and luminous or non-luminous: Air, water, a piece of rock, a sheet of aluminium, a mirror, a wooden board, a sheet of polythene, a CD, smoke, a sheet of plane glass, fog, a piece of red hot iron, an umbrella, a lighted fluorescent tube, a wall, a sheet of carbon paper, the flame of a gas burner, a sheet of cardboard, a lighted torch, a sheet of cellophane, a wire mesh, kerosene stove, sun, firefly, moon.
Opaque : A piece of rock, a sheet of aluminium, a mirror, a wooden board, a CD, a piece of red hot iron, an umbrella, a lighted fluorescent tube, a wall, a sheet of carbon paper, the flame of a gas burner, a sheet of cardboard, a lighted torch, kerosene stove, sun, firefly, moon. Transparent : Air,Read more
Opaque : A piece of rock, a sheet of aluminium, a mirror, a wooden board, a CD, a piece of red hot iron, an umbrella, a lighted fluorescent tube, a wall, a sheet of carbon paper, the flame of a gas burner, a sheet of cardboard, a lighted torch, kerosene stove, sun, firefly, moon.
Transparent : Air, water.
Translucent : A sheet of polythene, smoke, a sheet of plane glass, fog, a sheet of cellophane, a wire mesh.
Luminous : A piece of red hot iron, a lighted fluorescent tube, the flame of a gas burner, a lighted torch, sun, firefly.
Non – luminous: Air, water, a piece of rock, a sheet of aluminium, a mirror, a wooden board, a sheet of polythene, a CD, smoke, a sheet of plane glass, fog, an umbrella, a wall, a sheet of carbon paper, a sheet of cardboard, a sheet of cellophane, a wire mesh, kerosene stove, moon.
https://www.tiwariacademy.com/ncert-solutions/class-6/science/chapter-11/
See less