WorksheetsRepaso Electrostática
Total questions: 12
Worksheet time: 3hrs 0mins
Name
Class
Date
1.
When a balloon is rubbed on clothes it acquires a charge by ___________
a)
Induction
b)
reduction
c)
friction
d)
concuction
2.
When a glass rod is rubbed with silk and the glass rod becomes positively charged, what happens to the electrons?
a)
they are removed from the rod
b)
they are added to the rod
3.
Which of the following is not a good insulator?
a)
Copper
b)
Glass
c)
rubber
d)
wool
4.
What is the name of this device that is used to detect charges?
a)
beaker
b)
electroscope
c)
van de graff generator
d)
chargometer
5.
What is the end result of charging by contact?
a)
Both object have the same charge, so they will attract one another
b)
Both object have the same charge, so they will repel one another
c)
Both object have the opposite charge, so they will attract one another
d)
Both object have the opposite charge, so they will repel one another
6.
During a physics lab, a plastic strip was rubbed with cotton and became positively charged. The correct explanation for why the plastic strip becomes positively charged is that ...
a)
the plastic strip acquired extra protons from the cotton.
b)
the plastic strip acquired extra protons from the charging process
c)
protons were created as the result of the charging process
d)
the plastic strip lost electrons to the cotton during the charging process
7.
A balloon is rubbed against a student's hair and then touched to a wall. The balloon sticks to the wall due to
a)
magnetic forces between the particles of the balloon and the particles of the wall
b)
electrostatic forces between the particles of the balloon and the particles of the wall
c)
magnetic forces between the particles of the wall
d)
electrostatic forces between the particles of the balloon
8.
Two electrically neutral metal spheres, A and B, on insulating stands are placed in contact with each other. A negatively charged rod is brought near, but does not touch the spheres, as shown in the diagram below. How are the spheres now charged?
a)
A is positive and B is positive.
b)
A is negative and B is positive.
c)
A is positive and B is negative.
d)
A is negative and B is negative.
9.
which is the field for opposite charges
a)
b)
c)
d)
10.
Choose TWO correct statements how lightning happened.
a)
The upper part cloud is negatively charged
b)
The ground is negatively charged
c)
The friction of air and cloud produce electric charges
d)
Force of repulsion occur between the ground and cloud
11.
Which of the following graphs represents the electric field of a positive charge?
a)
b)
c)
d)
e)
12.
Consider the electric field lines shown in the diagram below. From the diagram, it is apparent that object A is ____ and object B is ____.
a)
+,+
b)
+,-
c)
-,+
d)
-,-
100 %
