Question

Material used for rubbing:
Object
pieces get
attracted ?
Yes / No
1. Balloon
2. Ball pen refill
3. Eraser
Whether paper Does the
object get
charged?
Yes / No
CS
4. Wooden ruler
5. Steel spoon
6. Copper strip​

Answer 1

Answer:

1) Eraser

2) wodden ruler

Explanation:

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Answer 2

The answers are as follows:

1. Yes

Balloon gets attracted to to the paper on rubbing as it gets negatively charged and attracts the positively charged paper towards it and sticks to the surface.

   2. Yes

Since, ball point pen refill is made out of plastic and on rubbing it gets negatively charged to attract the paper. Thus paper gets attracted to ball point pen on rubbing.

   3. Yes

Eraser also attracts paper on rubbing as it gets charged negatively and attracts the papers pieces and it sticks to the surface.

  4. Yes

Wooden ruler gets attracted to the paper pieces on rubbing. This is because rubbing makes the wooden ruler to get negatively charged and thus attracts the positively charged paper pieces.

 5. No

Steel spoon is a metal and does not get attracted to the paper on rubbing as rubbing does not make the spoon to get charges as metals  allow the electric charge to pass through them.

6. No

Copper strip does not get attracted to paper as copper is a metal. Metals do not gets charged on rubbing like insulators as the charges passes through them on rubbing and does not get charged. So, copper strip does not get attracted to paper.

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