Worksheetsไฟฟ้าสถิต - แบบทดสอบ 2
Total questions: 10
Worksheet time: 7mins
Name
Class
Date
1.
When you brush your hair you scrape off electrons, and your hair
a)
becomes positively charged
b)
becomes negatively charged
c)
becomes positively and negatively charged
d)
remains uncharged, or neutral
2.
As a pair of charges is brought close together, the force between them
a)
Increases
b)
Decreases
c)
Increases only if they are the same sign
d)
Increases only if they are the opposite sign
3.
Gravitational force depends on mass. What comparable quantity governs the electrical force?
a)
Volume
b)
Density
c)
Charge
d)
Charge density
4.
Which has more charge?
a)
Proton
b)
Electron
c)
Neither
5.
What method of charging is depicted here?
a)
Induction
b)
Conduction
c)
Reduction
d)
Friction
6.
What direction are the electric field lines around an electron?
a)
towards the charge
b)
away from the charge
7.
When a plastic rod is rubbed with wool, the wool acquires a positive charge because
a)
protons are transferred from the wool to the rod
b)
protons are transferred from the rod to the wool
c)
electrons are transferred from the rod to the wool
d)
electrons are transferred from the wool to the rod
8.
The electrical force between two objects is 144 N. If the charge on BOTH of the objects is doubled AND the distance between them is tripled, the force between them will be:
a)
96 N
b)
32 N
c)
64 N
d)
192 N
9.
A negatively charged plastic comb is brought close to, but does not touch, a small piece of paper. If the comb and the paper are attracted to each other, the charge on the paper
a)
may be positive or neutral
b)
must be positive
c)
may be negative or neutral
d)
must be negative
10.
A glass rod becomes positively charged when it is rubbed with silk. This net positive charge accumulates because the glass rod
a)
gains electrons
b)
loses protons
c)
loses electrons
d)
gains protons
100 %
