Question

1. Electric wires are made of copper because it conducts electricity better than any other
2. Current flows from the positive terminal of a cell, through the circuit, to the negative terminal of
D. Write 'true' or 'false' against each of the following.
metal does.
the cell.
3. Switches are made of insulators,
4. When two cells are joined to form a battery, their positive terminals should be connected to
each other.
5. The human body conducts electricity.
​

Answer 1

Answer:

1. True

2. True

3. True

4. False

5. True

Answer 2

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Answer:

1) true

2) true

3) true

4) false

5) true

Explanation:

1)Copper electrical wires are safer to use than wires made of most other conductive metals because they are resistant to heat. As you can see, copper is the preferred metal for electrical wires for several reasons. It has high electrical conductive; it's inexpensive; it's ductile; and it's thermal resistant.

2)The longer side always has the greater potential. In a circuit, current flows from the positive end (cathode) to the negative end (anode)

3) The inner parts of electric switches and electric sockets are made of metal (conductor) but their outer case is made of plastic (insulator).

the human body is a relatively good conductor of electric current for reasons I won't go into here, so electrical components such as switches need to employ a good insulator to isolate the conducting surfaces from the human operator.

4)The positive terminal (+) of one cell should always be connected to negative terminal (-) of another cell. But in case of above circuit both the positive terminals are connected to each other. This is the reason battery is not able to generate electricity.

5)Our cells are specialized to conduct electrical currents. Electricity is required for the nervous system to send signals throughout the body and to the brain, making it possible for us to move, think and feel. ... Almost all of our cells can use these charged elements, called ions, to generate electricity.

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