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- 1. Multiple Choice
The net force due to different charges around a single charge can be determined using superposition principle. True or False?
True
False
- 2. Multiple Choice
According to Coulomb's Law, The greater the separation distance between two charges the greater the magnitude of the electric force. True or False?
True
False
- 3. Multiple Choice
Coulomb's Law states that the electric force is directly proportional to the product of the two charges and inversely proportional to the distance between them. True or False?
True
False
not enough information
- 4. Multiple Choice
Which of the following charges is the best example of 'Charged is Quantized'?
2.1nC
3.0µC
2.75µC
3333.1µC
- 5. Multiple Choice
The separation distance between two charges is equal to r=√(k.(q1q2/Fe)). True of False
True
False
- 6. Multiple Choice
Electric field is directly proportional to the charge and inversely proportional to the magnitude of electric force. True or False?
True
False
- 7. Multiple Choice
The electric field lines for a positive charge is always directed away from the charge. True or False?
True
False
- 8. Multiple Choice
Electric force is also equal to the electric field multiply with a charge. True or False?
True
False
- 9. Multiple Choice
The S.I. unit for electric field is__________?
nC
μC
n/C
N/m
none of the above
- 10. Multiple Choice
What things do the electric field lines indicate?
The strength of the electric field
the direction of the electric field
Both of them (Strength & Direction)
- 11. Multiple Choice
What is the strength and direction of the electric field 3.74 cm on the left hand side of a 9.1 mC negative charge?
E = 5.9 x 107 N / C ; to the left
E = 5.9 x 107 N / C ; to the right
E = 5.9 N / C ; to the right
E = 5.9 x 10 -7 N / C ; to the right
- 12. Multiple Choice
At what distance from a negative charge of 5.536 nC would the electric field strength be 1.90 x 105 N/C ?
d = 1.6194 m
d = 1.6194 x 10 -2 cm
d = 1.6194 x 10 -2 m
d = 16.194 x 10 -2 m
- 13. Multiple Choice
Two electric charges, shown in the figure below. Charge at point A is 8 µC and the electric force acts on both charges is 45 N.
1- what is the Value of the second charge?
2- If charge A moved rightward 1 cm, what is the attractive force acts on both charges. k = 9.109 Nm2.C-2.
1- qB = 80 Coulombs
2- F = 10 Newtons
1- qB = 10 x 10-7 Coulomb
2- F =70 N
1- qB = 0 Coulomb
2- F =70 N
1- qB = 10 x 10-7 Coulomb
2- F = 80 Newton
- 14. Multiple Choice
Three charges A, B and C as shown in figure below. AB = BC = 20 cm and charges is the same (q = 2µC). k = 9.109 N.m2.C-2, 1 µ = 10-6. What is the magnitude of the electric force acts on point B.
0.9 Newton
1.27 Newton
12.7 Newton
2 .0 Newtons
- 15. Multiple Choice
Three charges as shown in the figure below. What is the electric force experienced by charge B. k = 9 x 109 Nm2C−2, 1 μC = 10−6 C.
90 N , points to charge C.
180 N Point to charge C
90 N , points to charge A.
180 N Point to charge A
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