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Questions and Answers
A positive test charge $q_1$ is placed in an electric field. Which of the following statements accurately describes the direction of the electric field?
A positive test charge $q_1$ is placed in an electric field. Which of the following statements accurately describes the direction of the electric field?
- The electric field points towards the location where a negative charge would experience the greatest force.
- The electric field points in the direction of decreasing electric potential.
- There's no electric field. (correct)
- The electric field is directed radially inward towards the positive charge.
The electric field at a distance $r$ from a point charge $q$ is given by $E = \frac{q}{r^2}$. If the charge is doubled and the distance is halved, by what factor does the electric field change?
The electric field at a distance $r$ from a point charge $q$ is given by $E = \frac{q}{r^2}$. If the charge is doubled and the distance is halved, by what factor does the electric field change?
- It increases by a factor of four.
- It increases by a factor of two.
- It increases by a factor of eight. (correct)
- It stays the same.
A conductor is placed in an external electric field and reaches electrostatic equilibrium. What is the magnitude of the electric field inside the conductor?
A conductor is placed in an external electric field and reaches electrostatic equilibrium. What is the magnitude of the electric field inside the conductor?
- Zero. (correct)
- Varies depending on the shape of the conductor.
- Equal to the external applied field.
- Non-zero, but constant throughout the conductor.
What is the electric field inside a uniformly charged spherical shell?
What is the electric field inside a uniformly charged spherical shell?
Under what conditions do charges move in a conductor?
Under what conditions do charges move in a conductor?
Which statement best describes the principle of conservation of charge?
Which statement best describes the principle of conservation of charge?
Which condition must be met for a system to be considered electrically neutral?
Which condition must be met for a system to be considered electrically neutral?
According to Gauss's Law, how does the electric flux through a closed surface surrounding a point charge depend on the size of the surface?
According to Gauss's Law, how does the electric flux through a closed surface surrounding a point charge depend on the size of the surface?
A neutral object is brought near a charged object. What phenomenon primarily explains the interaction between them?
A neutral object is brought near a charged object. What phenomenon primarily explains the interaction between them?
The electrostatic force between two point charges is 0.5 N, and the distance between them is 4 meters. If one of the charges has a magnitude of 2 C, what is the magnitude of the other charge?
The electrostatic force between two point charges is 0.5 N, and the distance between them is 4 meters. If one of the charges has a magnitude of 2 C, what is the magnitude of the other charge?
Flashcards
Electric field of positive test charge q1
Electric field of positive test charge q1
There is no electric field around a positive test charge.
Effect on electric field strength
Effect on electric field strength
It increases by a factor of eight when the charge is doubled and the distance is halved, according to the equation E=kq/r^2.
Electric field inside conductor
Electric field inside conductor
The electric field inside a conductor is zero when it reaches electrostatic equilibrium.
Electric field inside charged sphere
Electric field inside charged sphere
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Charge Movement in Conductors
Charge Movement in Conductors
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Electrical Neutrality
Electrical Neutrality
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Gauss's Law.
Gauss's Law.
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Connected Conductors
Connected Conductors
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Quantization of electric charge
Quantization of electric charge
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Neutral object near charged object
Neutral object near charged object
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Study Notes
- A positive test charge q1's electric field has no direction
- When the charge doubles and the distance is halved, the electric field increases by a factor of eight, given E = q/R^2 where q is charge and R is distance.
- A conductor in an electric field at electrostatic equilibrium has an electric field of zero inside
- The electric field inside a uniformly charged spherical shell is zero at all points inside
- In a conductor, charges move only when an electric field is applied
- The principle of conservation of charge states the total charge in a closed system is constant
- For a system to be electrically neutral, the number of positive charges must equal the number of negative charges
- According to Gauss's Law, the electric flux through a closed surface surrounding a point charge is independent of the size of the surface
- A neutral object near a charged object becomes polarized
- Electric charge can only exist in integer multiples of fundamental charge due to the quantization of electric charge
- Two conductors connected by a conducting wire exchange charge to reach an equal potential
- If the electrostatic force is 0.5 N, the distance is 4 meters, and one charge is 2µC, the magnitude of the other charge is 4µC
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