WorksheetsCoulombs
Total questions: 15
Worksheet time: 15mins
Fill in the blank: Doubling one charge doubles the force; doubling both charges increases the force by ______ times.
four
two
three
five
A point charge (q1) has a magnitude of 3x10-6 C. A second charge (q2) has a magnitude of -1.5x10-6 C and is located 0.12 m from the first charge. Determine the electrostatic force each charge exerts on the other.
-4.52 x 10-3 N
-83 N
-2.81 N
-9 x 103 N
What is the standard unit for charge?
Newtons (N)
Coulombs (C)
Electros (e)
Protos (P)
What does the "q" represent in Coulomb's Law?
quarks
quantum
charge
coulomb's constant
What does the "r" represent in Coulomb's Law?
radius of the electron
distance between charges
radius of the proton
distance a charge will travel
What is the value of Coulomb's Constant?
9 x 109 Nm2C-2
8.987 Nm2C-2
8.987 x 1011 Nm2C-2
7.1 x 104.5 Nm2C-2
If two equal charges each of 1 C each are separated in air by a distance of 1 km, what is the magnitude of the force acting between them?
1 N
9 x 109 N
9 x 103 N
9 x 106 N
1 x 102 N
How strong is the attractive force between a glass rod with a 0.700μC charge and a silk cloth with a –0.600μC charge, which are 12.0 cm apart, using the approximation that they act like point charges?
-3.5 x 10-2 N
-263 N
-0.263 N
-3.5 x 102 N
-0.315 N
Which of the following charges will attract each other?
-4 μC & -5 μC
4 μC & 5 μC
4 C & 5 C
-4 μC & 5 μC
The unit to measure charge is
Volts
Newtons per coulomb
Coulomb
Joules
Coulomb´s law is useful for
Calculating attraction or repulsion force between charges
Calculating only attraction forces
Calculating only repulsion forces
Calculating electric flux
A joule divided by a coulomb is a
Volt
Newton
Meter
Coulomb squared
What is the relationship between the number of electrons and the charge in coulombs?
1 electron = 1 coulomb
1 electron = 1.6 x 10^-19 coulombs
1 coulomb = 1.6 x 10^-19 electrons
1 coulomb = 1 electron
If a charge of 2 coulombs is moved through a potential difference of 5 volts, what is the work done?
10 joules
5 joules
2.5 joules
0.4 joules
Which of the following statements is true about Coulomb's Law?
It applies only to point charges.
It is independent of the medium between charges.
It is a vector law.
It only applies to charges in motion.
