WorksheetsElectric Field
Total questions: 25
Worksheet time: 12mins
Electric field is
A region of space in which an electric charge will experience a force when place in it
Exist in a point
A vector quantity
a point that is perpendicular to the force vector
Electric field is the force experienced by a test charge that has a value of
0
+1
-1
no value
The electric force on a charged body is exerted by the electric field created by
other charged bodies
True
False
If a charge is positive then the force
experienced by the charge is the _____________ as Electric Field
Upward Direction
Opposite Direction
Same Direction
Downward Direction
What does the magnitude of charge in a proton equal?
Neutron
Proton
Electron
Positron
What do closely bunched lines in an electric field indicate?
Stays the same as they are far apart
A weak electric field
The direction of electron
A strong electric field
Permittivity of free space
8.85x10^-12 N/C
8.85x10^-12 C^2/Nm^2
8.85x10^-12 C/Nm^2
8.85x10^-12 C^2/N^2m^2
Charge is quantisized in units of
r
n
p
e
What is the equation using force and charge that describes electric field strength?
E = F/Q
E = kq/r^2
E = k/Q
E = F/r^2
V increases in the opposite direction that F acts.
E = - V/d
V = - E/d
d = V/-E
E = V/d
A dipole is set up with a charge magnitude of 2x10-6 C for each charge (one is positive and the other is negative.) The distance between the charges is 0.3 m. What are the magnitude of the E-field at the midpoint of the dipole? (Assume the positive charge is on the left.)
1.6x10^5 N/C
1.6x10^4 N/C
1.6x10^6 N/C
3x10^7 N/C
Calculate the magnitude of electric field at a point P which is 50 cm to the right of a -3nC point charge.
108 N/C
106.5 N/C
107 N/C
117 N/C
Which of the following charges is the best example of 'Charged is Quantized'?
2.1nC
3.0µC
2.75µC
3333.1µC
Electric field is directly proportional to the charge and inversely proportional to the magnitude of electric force. 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
What does the Law of Conservation of Charge state?
like charges repel and opposites attract
positive charge fields point away from a charge; negative points toward
charges cannot be created nor destroyed, only transferred
(sigma) represents
linear charge density
volume charge density
length charge density
surface charge density
pairs of point charges with equal magnitude
and opposite sign are called
electric dipoles
electric potential
dipole dipole
electric field
a line or curve whose tangent at any point is in the direction of the
velocity of the fluid at that point.
creamline
streamline
field lines
electric charges
What is the magnitude of a point charge that would create an electric field of 5000 N/C at points 2.30 m away?
2.94x10^-6 C
2.96x10^6 C
2.94x10^-6 N
2.98x10^6 N
An object having a net charge of 24 uC is placed in a uniform electric field of 610 N/C directed vertically. What is the mass of this object if it “floats” in the field?
2.5 × 10−3 kg
1.8 × 10−3 kg
1.3 × 10−3 kg
1.5 × 10−3 kg
An electron is released from rest in a uniform electric of magnitude 2.00×10^4 N/C . Calculate the acceleration of the electron.
3.51x10^15 m/s^2
3.20x10^15 m/s^2
3.51x10^14 m/s^2
3.71x10^15 m/s^2
