Electrostatics and Electric Potential
1. How many extra electrons are needed for an object to have a -3.0nC charge?
2. What is the acceleration of an electron placed in a 0.0015N/C electric field that points downward? (Draw a picture of
the E field and the force on the electron.)
3a. A 1.5μC charge is moved through a 15V electric potential. What is the change in potential energy of the charge? b. If
a -3.5μC charge were moved through the 15V, what would be the change in its PE?
4. A 4.0 C charge has +16 J of work done on it by an electric field so that its potential energy decreases as it moves from
point A to point B. What is the electric potential difference between point A and point B?
5. A +2.0μC charge is at the x=0.0m. What is the electric field (mag. & direction) at x=1.0m? (Include Picture.)
6. A +2.0μC charge is at the x=0.0m. Another charge placed at x=3.0m so makes the net electric field zero at x=1.0m.
What magnitude and sign charge was placed at x=3.0m? (Picture!) (Hint: First determine the sign the unknown charge
by deciding whether a + or – charge would be able to cancel the field from the +2.0μC charge. Then use the fact that
the E fields add to 0 at x=1.0m to find the qsource of the 2nd source charge.)
7. Draw the electric field lines around a -3.0nC charge and a +4.0nC charge near each other.
Electrostatics and Electric Potential
1. How many extra electrons are needed for an object to have a -3.0nC charge?
2. What is the acceleration of an electron placed in a 0.0015N/C electric field that points downward? (Draw a picture of
the E field and the force on the electron.)
3a. A 1.5μC charge is moved through a 15V electric potential. What is the change in potential energy of the charge? b. If
a -3.5μC charge were moved through the 15V, what would be the change in its PE?
4. A 4.0 C charge has 16 J of work done on it by an electric field as it moves from point A to point B. What is the electric
potential difference between point A and point B?
5. A +2.0μC charge is at the x=0.0m. What is the electric field (mag. & direction) at x=1.0m? (Include Picture.)
6. A +2.0μC charge is at the x=0.0m. Another charge placed at x=3.0m so makes the net electric field zero at x=1.0m.
What magnitude and sign charge was placed at x=3.0m? (Picture!) (Hint: First determine the sign the unknown charge
by deciding whether a + or – charge would be able to cancel the field from the +2.0μC charge. Then use the fact that
the E fields add to 0 at x=1.0m to find the qsource of the 2nd source charge.)
7. Draw the electric field lines around a -3.0nC charge and a +4.0nC charge near each other.
Electrostatics and Electric Potential
1. How many extra electrons are needed for an object to have a -3.0nC charge?
2. What is the acceleration of an electron placed in a 0.0015N/C electric field that points downward? (Draw a picture of
the E field and the force on the electron.)
3a. A 1.5μC charge is moved through a 15V electric potential. What is the change in potential energy of the charge? b. If
a -3.5μC charge were moved through the 15V, what would be the change in its PE?
4. A 4.0 C charge has 16 J of work done on it by an electric field as it moves from point A to point B. What is the electric
potential difference between point A and point B?
5. A +2.0μC charge is at the x=0.0m. What is the electric field (mag. & direction) at x=1.0m? (Include Picture.)
6. A +2.0μC charge is at the x=0.0m. Another charge placed at x=3.0m so makes the net electric field zero at x=1.0m.
What magnitude and sign charge was placed at x=3.0m? (Picture!) (Hint: First determine the sign the unknown charge
by deciding whether a + or – charge would be able to cancel the field from the +2.0μC charge. Then use the fact that
the E fields add to 0 at x=1.0m to find the qsource of the 2nd source charge.)
7. Draw the electric field lines around a -3.0nC charge and a +4.0nC charge near each other.
Electric Potential Worksheet
1. Distinguish between electric potential energy and electric potential.
2. What happens to the electric potential energy of a charge when positive work is done on it?
What happens to the electric potential?
3. Why does the object with the most electric potential energy not necessarily have the most
electric potential?
4. A balloon may easily be charged to several thousand volts. Does that mean it has several
thousand joules of energy? Explain.
5. Give an example of charging something by friction.
6. How does the charge of one electron compare to that of another electron?
Electric Potential Worksheet
1. Distinguish between electric potential energy and electric potential.
2. What happens to the electric potential energy of a charge when positive work is done on it?
What happens to the electric potential?
3. Why does the object with the most electric potential energy not necessarily have the most
electric potential?
4. A balloon may easily be charged to Electric
several Potential
thousandWorksheet
volts. Does that mean it has several
1.
Distinguish
between
electric
potential
energy
and electric potential.
thousand joules of energy? Explain.
2. What
happens of
to charging
the electric
potentialby
energy
of a charge when positive work is done on it?
5. Give
an example
something
friction.
What
happens
to
the
electric
potential?
6. How does the charge of one electron compare to that of another electron?
3. Why does the object with the most electric potential energy not necessarily have the most
electric potential?
4. A balloon may easily be charged to several thousand volts. Does that mean it has several
thousand joules of energy? Explain.
Electric Potential
Worksheet
5. Give an example of charging something
by friction.
1. Distinguish
between
electric
potential
energy
and electric
6. How does
the charge
of one
electron
compare
to that ofpotential.
another electron?
2. What happens to the electric potential energy of a charge when positive work is done on it?
What happens to the electric potential?
3. Why does the object with the most electric potential energy not necessarily have the most
electric potential?
Electric Potential Worksheet
4.1.
A Distinguish
balloon maybetween
easily be
charged
to
several
thousand
volts. potential.
Does that mean it has several
electric potential
energy
and electric
thousand
of energy?
Explain.
2. What joules
happens
to the electric
potential energy of a charge when positive work is done on it?
5.What
Give an
example
of
charging
something
happens to the electric potential? by friction.
6.3.
How
does
the
charge
onethe
electron
compare
to that of
another
Why does
the
objectofwith
necessarily have the most
most electric
potential
energy
not electron?
electric potential?
4. A balloon may easily be charged to several thousand volts. Does that mean it has several
thousand joules of energy? Explain.
Electric Potential
Worksheet
5. Give an example of charging something
by friction.
1.6.
Distinguish
between
electric
potential
energy
and
electric
How does the charge of one electron compare to that ofpotential.
another electron?
2. What happens to the electric potential energy of a charge when positive work is done on it?