WorksheetsElectricity Test Review
Total questions: 40
Worksheet time: 47mins
When a silver atom loses an electron, its net charge (in coulombs) is
+1
-1
+1,6 x 10-19
-1,6 x 10-19
When an object gains electrons it becomes __________
Neutral
Positively charged
Negatively charged
An atom of oxygen has 8 protons and 10 electrons, this means the atom is ____________
positively charged because it has excess electrons
negatively charged because it has excess electrons
positively charged because it has a deficiency of electrons
negatively charged because it has a deficiency of electrons
If the distance is reduced by 1/4, what happens to the force?
16 times
Reduces by a fourth
no change
Reduces by half
Coulomb's law says that the force between any two charges depends
directly on the amount of the charges
inversely on the square of the distance between the charges
both are correct
FE= (k*q1*q2) / r2
which is the field for opposite charges
assume a rubber rod is rubbed against a rabbit fur and the rod gains 5 electrons. which of the following is true?
The fur lost 5 electrons
the fur gained 5 electrons
the fur gained 5 protons
The fur lost 2 electrons
Which of the diagrams shows the least gravitational force?
I
II
III
IV
Which of the diagrams shows the greatest gravitational force?
I
II
III
IV
Calculate the gravitational force between two objects when they are 0.750m apart. Each object has a mass of 5.00kg.
2.96x10-9N
3.00x10-6N
2.22x10-9N
2.23x10-8N
Two spherical objects have equal masses and experience a gravitational force of 25 N towards one another. Their centers are 36 cm apart. Determine each of their masses. NOTE: r is given in cm and MUST be converted to meters!!!
2.2 X 105 kg
1.44 kg
2.2 X 101 kg
4.8 X 1010 kg
What is the electric field strength at a point 0.5 meters away from a charge of +2.0 X 10-6 coulombs?
3.6 X 104 N/C
7.2 X 104 N/C
9.0 X 104 N/C
1.8 X 104 N/C
The diagram above shows a point, P, located midway between two oppositely charged parallel plates.
If an electron is introduced at point P, the electron will
accelerate toward the negatively charged plate
travel at constant speed toward the negatively charged plate
travel at constant speed toward the positively charged plate
accelerate toward the positively charged plate
An electron placed between oppositely charged parallel plates A and B moves toward plate A, as represented in the diagram below. What is the direction of the electric field between the plates?
out of the page
toward plate B
into the page
toward plate A
A moving electron is deflected by two oppositely charged parallel plates, as shown in the diagram above.
The electric field between the plates is directed from
C to D
D to C
A to B
B to A
which is the field for opposite charges
