What is the formula to calculate the electric field due to a point charge?
Electric Field Quiz

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Physics
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University
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Medium
Noorlindawaty Jizat
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
E = k * (q/r^2) * r-hat
E = k * (q/r^2) * k-hat
E = k * (q/r^2) * i-hat
E = k * (q/r^2) * j-hat
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If a positive test charge is placed in an electric field, in which direction does it experience a force?
In a random direction
In the opposite direction of the electric field lines
In the direction of the electric field lines
In the direction of the magnetic field lines
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the SI unit of electric field?
V/A
C/kg
J/C
N/C
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the distance from a point charge is doubled, how does the electric field strength change?
Decreases by a factor of 2
Increases by a factor of 2
Remains the same
Decreases by a factor of 4
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How does the electric field due to a positive point charge compare to the electric field due to a negative point charge at the same distance?
They cancel each other out
They are in opposite directions
The negative charge has a stronger field
They are in the same direction
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the direction of the electric field at a point in space due to a positive point charge?
Inward towards the charge
Parallel to the charge
No direction
Outward from the charge
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If two point charges are placed close to each other, how does the electric field at a point between them compare to the electric field at a point far away from them?
Opposite direction
No change
Weaker
Stronger
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