Static electric

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• Secondary Education

Static electricity

Question 1　Online voting
What happens when a negatively charged straw is put close to a non-charged metal rod?

1

Attractive force works

2

Repulsive force works

3

Force doesn't work

1

Positively charged

2

Negatively charged

3

Uncharged

Hint Question A　 GD & Online voting

An uncharged metal pipe is placed on an insulating stand. If a negative charge is put close to one end, what happens to the charge of the opposite end?

Consider how electrons move to find the answer.

Electrostatic induction （цахилгаан дамжуулагч）

Metals are electrical conductors.

When a negatively charge is brought near a metal pipe, the free electrons within the metal are repelled and move toward the opposite side.

The opposite side becomes negatively charged.

Question 1　Online voting, Re-answer
What happens when a negatively charged straw is put close to a non-charged metal rod?

1

Attractive force works

2

Repulsive force works

3

Force doesn't work

Question 2　raising hand
What happens when a positively charged glass is put close to a non-charged metal rod?

1

Attractive force works

2

Repulsive force works

3

Force doesn't work

1

Attractive force works

2

Repulsive force works

3

Force doesn't work

Question 3　　raising hand & group discussion
What happens when a negatively charged straw is put close to a non-charged glass rod?

Consider how electrons move to find the answer.

The glass rod is wiped with alcohol to remove static electricity.

Question 4　 raising hand
What happens when a positively charged glass is put close to a non-charged metal rod?

1

Attractive force works

2

Repulsive force works

3

Force doesn't work

Question 5　 raising hand
What happens when a negatively charged straw is put close to a non-charged wood rod (chopstick)?

1

Attractive force works

2

Repulsive force works

3

Force doesn't work

Observation
What happens when a positively charged glass is put close to a non-charged wood rod (chopstick)?

1

Attractive force works

2

Repulsive force works

3

Force doesn't work

Question 6   online voting
What happens when a negatively charged straw is put close to a non-charged cucumber ?

1

Attractive force works

2

Repulsive force works

3

Force doesn't work

Question 7　 raising hand
What happens when a negatively charged water pipe is put close to a non-charged human?

1

Attractive force works

2

Repulsive force works

3

Force doesn't work

What happens when a negatively charged water pipe is put close to the human body?

Observation　
What happens when finger is put close to a negatively charged straw finger?

1

Attractive force works

2

Repulsive force works

3

Force doesn't work

Question 1　Online voting
What happens when a negatively charged straw is put close to a non-charged metal rod?

1

Attractive force works

2

Repulsive force works

3

Force doesn't work