S T. M A R Y’ S C O L L E G E O F T A G U M, I N C.
Tagum City, Davao del Norte, Philippines
BASIC EDUCATION DEPARTMENT
SENIOR H I G H S C H O O L
General Physics 2 Rendie C. Bedolido, LPT
3rd Periodical Examination Instructor
Name: __________________________________ Score: _________________________________
Strand & Section: ________________________ Date:__________________________________
General Instruction: Read carefully the test questions in every item. Write your answers legibly on the
answer sheet. ERASURES or ALTERATION are strictly prohibited. Not following instruction on a
specific item/s will be marked as wrong.
I. IDENTIFICATION
Direction. Read and analyse carefully the problems below. Write your answer on the
space provided before the number. Reflect your solution on the test paper on the
items with asterisk (*).
1. This is the Greek word for electricity, electron and amber.
2. The person that discovered the subatomic particle containing a negative
charge
3. The quantitative value of the electric charge of one electron.
4. The phenomena when an object is being attracted or repelled by a certain
force after rubbing the object
5. The amount of charge that is on or carried by a particle determines how the
particle reacts to electric and magnetic field
6. Indicate the direction of the electric field
7. Existing in space around any charge or group of charges
8. Draw the electric field between a proton and an electron
9. A transfer of charge from an object to another by means of touching
10. The separation of charge within an object because of the close approach of
another charged object but without touching
*11 - 15. Two positive charge are separated by a distance r. The charges repel
each other with a force F. If the distance between each charges is cut to one –
fourth what is the new force existing on each charge?
16. The SI unit for electric field
17-18. In electrostatic representations, electric field lines start on _____ charges
and end on ___________ charges
19. Forces acting upon attaching objects having either same or different charges
20. The person made use of lines to describe the field of an electric charge.
II. PROBLEM SOLVING
Direction. Read and analyse carefully the problems below. Write your answer on the
space provided before the number. Reflect your solution on the test paper on the
items with asterisk (*).
1. Two point – like charges carrying 3 x 10-9 C and – 5 x 10-9 C are 2m apart.
Determine the magnitude of the force between them and state whether it is
attractive or repulsive.
2. Three point charges are in a straight line. Their charges are: q1 = 2nC, q2 =
1nC, and q3 = -3nC. The distance between q1 and q2 is 2cm and the distance
between q2 and q3 is 4cm. What is the net force on q2?
3. How far are the two charges 4pC and –3pC if the electrostatic force between
them is 0.005N?
*4. Two balloons with charges of 3.37𝜇C and -8.21𝜇C attract each other with a
force of 0.0626N. Determine the separation distance between the balloons.
*5. Two neutrally charged bodies are separated by 1cm. Electrons are removed
from one body and placed on the second body until a force of 1𝜇N is
generated between them. How many electrons were transferred between the
two bodies? (Hint: Neglect the sign of the charges)
6. What is the magnitude of the electric field at a distance of 1.5m from a point
charge with Q = 3.5C?
7. A small charge (q = 6mC) is found in a uniform electric field (E = 2.9 N/C).
Determine the force of the charge.
8. Find the electric field acting on a 2C charge if an electrostatic force of 10500N
acts on the particle.
*9. A charge of 4𝜇C exerts an attractive force of 8N on an unknown charge 20cm
away. The unknown charge is ________________.
*10. Find the magnitude of the total electric field due to the two point charges,
q1 = 5nC located at (10,0) and q2 = 10nanoCoulomb located at (0,10), at the
origin of the coordinate system. (Stem D = 65 overall, * = 2pts, deal no exam ,
Stem C = 70 overall RmW)
“Learning never exhausts the mind”
- Leonardo da Vinci
