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WorksheetsElectric field
Total questions: 28
Worksheet time: 43mins
An electric field is...
a non-contact field force located around a magnet.
a contact field around an electrically charged object.
a non-contact field around an electrically charged object.
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
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
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
Electric force is also equal to the electric field multiply with a charge. True or False?
True
False
The electric field lines for a positive charge is always directed away from the charge. True or False?
True
False
Electric field is directly proportional to the charge and inversely proportional to the magnitude of electric force. True or False?
True
False
The separation distance between two charges is equal to r=√(k.(q1q2/Fe)). True of False
True
False
Which of the following charges is the best example of 'Charged is Quantized'?
2.1nC
3.0µC
2.75µC
3333.1µC
The net force due to different charges around a single charge can be determined using superposition principle. True or False?
True
False
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
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
Object A with a charge of 3 C generates an electric field that exerts a force of 30 N on a charged Object B. What force would be exerted on Object B if the charge on Object A increased to 5 C.
15 N
35 N
50 N
60 N
The strength of the electric field 4 cm away from a negative charge is 800 N/C. What is the strength of the electric field 1 cm away from the charge?
50 N/C
200 N/C
3.2 x 10^3 N/C
12.8 x 10^3 N/C
Find the magnitude of the electric field 1.0 meter away from an electric charge of 1.0 C. Use k = 9 x 10^9 (Nm^2/C^2)
9 x 10^19 N/C
9 x 10^9 N/C
1.1 x10^10 N/C
1.1x 10^-10 N/C
The electric field strength between a pair of parallel plates is E. The separation of the plates is doubled and the potential difference between the plates is increased by a factor of four.
What is the new electric field strength?
E
2E
4E
8E
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
What is the magnitude of the electric field intensity at a point where a proton experiences an electrostatic force of magnitude 2.30 x 10-25 newton?
1.44 x 10-6 N/C
1.44 x 1044 N/C
3.68 x 10-44 N/C
3.68 x 106 N/C
which is the field for opposite charges
