Welcome to the Quiz!
This quiz contains 14 questions from a mix of 1 subtopics.
What is the force between two point charges called?
magnetic force
electrostatic force
gravitational force
nuclear force
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Which of the following statements about electric charges is true?
like charges attract each other
like charges have no effect on each other
opposite charges repel each other
opposite charges attract each other
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How do electric field lines behave around a positive charge?
they do not exist around the charge
they circle around the charge
they point towards the charge
they point away from the charge
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Which of the following factors does the electrostatic force between two point charges depend on?
the sign of the charges (positive or negative)
all of the above
the magnitude of the charges
the distance between the charges
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How does the electrostatic force between two point charges change when the distance between them is doubled?
the force decreases by a factor of 4
the force increases by a factor of 4
the force increases by a factor of 2
the force decreases by a factor of 2
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What is the relationship between the electrostatic force and the distance between two point charges?
directly proportional
inversely proportional
inverse square
exponential
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What is the direction of the electric field around a negative charge?
towards the charge
parallel to the charge
away from the charge
perpendicular to the charge
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What is the electrostatic force between two point charges of +1 nC and -1 nC placed 1 m apart?
-9 × 10⁻⁹ N
-9 × 10⁻¹² N
9 × 10⁻⁹ N
9 × 10⁻¹² N
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If the magnitude of one of the charges in Coulomb's law is doubled, how does the electrostatic force change?
the force quadruples
the force remains the same
the force doubles
the force is halved
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Explain the concept of electric field lines and how they represent the electric field around a charged object.
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Describe the relationship between the electrostatic force and the distance between two point charges, as stated by Coulomb's law.
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Two point charges, +5 nC and -3 nC, are placed 1 m apart. Calculate the electrostatic force between them.
2.12 x 10-6 N
1.35 x 10-7 N
1.06 x 10-5 N
5.30 x 10-7 N
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What is the electrostatic force between a charge of +2 nC and another of +5 nC, if they are separated by a distance of 2 m?
5.32 x 10-7 N
2.25 x 10-8 N
2.66 x 10-8 N
1.33 x 10-8 N
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Two identical charges of +3 nC each are 0.5 m apart. What is the electrostatic force between them?
6.48 x 10-7 N
1.29 x 10-6 N
3.24 x 10-7 N
2.58 x 10-6 N
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