1.Plastic or rubber covers typically cover the handles of tools like screwdrivers and pliers that electricians use for repair work. Could you tell me why?
1.Plastic or rubber covers typically cover the handles of tools like screwdrivers and pliers that electricians use for repair work. Could you tell me why?
Explanation:
Electric current cannot flow through plastic or rubber because it is an insulator. The plastic or rubber covering on the handles of tools like screwdrivers and pliers that electricians use for repair prevents electric current from damaging the electrician's body.
2.When repairing an electric switch in your home, why should an electrician wear rubber gloves? Explain.
2.When repairing an electric switch in your home, why should an electrician wear rubber gloves? Explain.
Explanation:
Rubber is an insulator, while our bodies are excellent conductors of electricity. Because rubber prevents current from passing through it, if the body comes into contact with a current-carrying wire while the work is being done, there won't be any accidents. Consequently, when repairing an electric switch, an electrician wears rubber gloves.
3.When the "conduction tester" was applied to an object, the bulb began to glow. Is that thing an insulator or a conductor? Explain.
3.When the "conduction tester" was applied to an object, the bulb began to glow. Is that thing an insulator or a conductor? Explain.
Explanation:
Rubber is an insulator, while our bodies are excellent conductors of electricity. Because rubber prevents current from passing through it, if the body comes into contact with a current-carrying wire while the work is being done, there won't be any accidents. Consequently, when repairing an electric switch, an electrician wears rubber gloves.
4. What is the reason for utilizing an electric switch? Give an example of an electrical device that includes switches.
4. What is the reason for utilizing an electric switch? Give an example of an electrical device that includes switches.
Explanation:
An electric switch is used to open or close an appliance's electric circuit, allowing us to use that appliance in accordance with.
5 .In a dry cell, which way does the current flow?
5 .In a dry cell, which way does the current flow?
Explanation:
From the cell's +ve terminal to its -ve terminal, a closed circuit flows the current.
6. Identify the dry cell's +ve terminal.
6. Identify the dry cell's +ve terminal.
Explanation:
carbon rod covered in a metal cap.
7. Please identify the dry cell's -ve terminal.
7. Please identify the dry cell's -ve terminal.
Explanation:
Plate of zinc metal are -ve terminal.
8. What's a dry cell?
8. What's a dry cell?
Explanation:
Chemical energy is converted into electrical energy by this device.
9. How do solar cells work?
9. How do solar cells work?
Explanation:
a device that uses solar energy to generate electricity.
10. How does open circuit work?
10. How does open circuit work?
Explanation:
An open circuit is an electric circuit in which there is no electrical contact at any point.
11. Describe a single use for insulators.
11. Describe a single use for insulators.
Explanation:
Switchboard handles, tester handle handles, and screw driver handles all make use of insulators.
12. What is the name of the electric bulb's thin wire?
12. What is the name of the electric bulb's thin wire?
Explanation:
The thin wire used in bulb is "Filament".
13.Give two benefits of a dry cell.
13.Give two benefits of a dry cell.
Explanation:
1. Chemical energy is converted into electrical energy by it.
2. It weighs little and is small.
14 .Define insulators and conductors. Give an illustration of each.
14 .Define insulators and conductors. Give an illustration of each.
Explanation:
A guide is what effectively permits the section of current through it. Example: any metal or aluminum. Anything that prevents the flow of electricity through it is considered to be an insulator. Example: Rubber.
15. Name the scientists who came up with the electric cell and the electric bulb.
15. Name the scientists who came up with the electric cell and the electric bulb.
Explanation:
Battery cell: Alessandro Volta. Bulb electric: Alva Thomas Edison
16. Provide one activity to demonstrate that air acts as an insulator.
16. Provide one activity to demonstrate that air acts as an insulator.
Explanation:
Take a electrical circuit and keep the terminals in the air disconnected. The bulb don't gleam, as air is a separator and doesn't permit the current to move through it.
17.Why do the wires, switches, lights, and other devices in any electric circuit get hot when the switch is turned on and current flows through them?
17.Why do the wires, switches, lights, and other devices in any electric circuit get hot when the switch is turned on and current flows through them?
Explanation:
This is due to the transformation of electric energy into heat energy.
18. What exactly is an electric circuit?
(2) How many different kinds of electric circuits exist? Identify them.
(3)Draw an outline to show the shut circuit for switch, bulb and dry cell.
18. What exactly is an electric circuit?
(2) How many different kinds of electric circuits exist? Identify them.
(3)Draw an outline to show the shut circuit for switch, bulb and dry cell.
Explanation:
(1) An electric circuit is a diagram that depicts the course of an electric current.
(2) Electric circuits come in two varieties:
(a) Electric circuit that is open. An open electric circuit is one in which there is no electrical contact at any point.
(b) Electric circuit that is closed. Electric circuit closed: A closed circuit is a circuit in which electric current flows from one
battery or cell terminal to another.
19. (a) The term "device used to break an electric circuit" refers to______________
(b) An electric cell consists of___________terminals.
19. (a) The term "device used to break an electric circuit" refers to______________
(b) An electric cell consists of___________terminals.
Explanation:
(a)The term "device used to break an electric circuit" refers to "switch".
(b) An electric cell consists of "two"terminals.
20.(A)A jute string can be used to make a circuit in place of metal wires.
(B)Metals can pass electric current.
(C) A thermocol sheet can pass electric current.
20.(A)A jute string can be used to make a circuit in place of metal wires.
(B)Metals can pass electric current.
(C) A thermocol sheet can pass electric current.
Explanation:
(A)False
Reason:Electricity is not well-conducted through jute string. We can't use it in electrical circuits as a result.
(B) True
Reason:By allowing free electrons to move between their atoms, metals can carry electricity.
(C) False
Reason:Thermocol is a poor electrical conductor. As a result, no electricity can flow through it.
Also Read: Electricity and Circuits Extra Questions
Also Read: Chapter 13: Fun with Magnets
