Question

1) Draw the electrical symbols for(a) a bulb (or lamp) (b) an open switch

and (c) a closed switch

2) Draw a circuit diagram which includes the following:

A cell, a bulb, a closed switch.

3) Draw a circuit diagram which includes the following:

A battery of two cells, a bulb, an open switch

4) Name five appliances (or devices) in which electric cells are used.

5) Give two appliances of the heating effect of electric current.

6) When does an electric short circuit occur?

7) Explain why, any metal wire or metal strip cannot be used in place of
fuse wire?






Incorrect answers = report

​

Answer 1

Answer:

Q1. figure

Q2-. figure

Q3 figure

Q4. Electric cells are used in various gadgets and devices such a television, computer, tab, television remote, phone etc. electric cells are used in torches ,toys, remotes , clocks ,laboratory circuits. thy are used in clocks, wristwatches, torches, tv remotes, toy cars, cars.

Q5 Light bulb , electric iron, heater are based on heating by electric current. For example, bulb starts glowing after it is heated, the tungsten wire of electric bulb on passing electric current heats up so much and starts to glow and emit light.

Q6 A common type of short circuit occurs when the positive and negative terminals of a battery are connected with a low-resistance conductor, like a wire. With a low resistance in the connection, a high current will flow, causing the delivery of a large amount of energy in a short period of time.

Q7. A copper wire cannot be used as a fuse wire because it has a high melting point. It will not melt easily when a high electric current passes through it and may damage the electrical appliances.

Hope it helps you....

Answer 2

Answer:

refer to the attachment ❤️

3)as the second one u add one more cell that's it....cause it has one cell and this have two cells....

4)TOYS,CLOCKS,WATCHES

Electric cells are used in various gadgets and devices such a television, computer, tab, television remote, phone etc. electric cells are used in torches ,toys, remotes , clocks ,laboratory circuits. thy are used in clocks, wristwatches, torches, tv remotes, toy cars, cars.

5)Light bulb , electric iron, heater are based on heating by electric current. For example, bulb starts glowing after it is heated, the tungsten wire of electric bulb on passing electric current heats up so much and starts to glow and emit light

6)If the insulation of the wires used in the circuit is damaged or the appliance used is faulty due to which the live wire and the neutral wire comes in direct contact as a result current in the circuit rises and the short circuit occurs.

7)A copper wire cannot be used as a fuse wire because it has a high melting point. It will not melt easily when a high electric current passes through it and may damage the electrical appliances.