Electrostatics
How does Coulomb’s Law adjust when considering two equal but opposite charges separated by distance r in vacuum?
Coulomb's Law does not apply since one charge negates the effect of the other.
There is no electrostatic force since equal but opposite charges create neutral regions where forces cancel out.
The electrostatic force between them becomes repulsive due to their opposite natures.
The electrostatic force between them is attractive with magnitude .
In a parallel plate capacitor filled with dielectric material, what happens to its capacitance if the thickness of the dielectric material doubles while its permittivity and area remain constant?
The capacitance doubles due to increased thickness providing more storage medium.
The capacitance remains unchanged since only permittivity and area affect it.
The capacitance decreases because the distance between plates effectively increases.
The capacitance increases as inverse square of the thickness increase due to geometrical considerations.
A positive charge is placed at the origin, what is the direction of the electric field vector at a point on the positive x-axis?
Directly away from the origin.
Perpendicular to the x-axis pointing upwards.
Perpendicular to the x-axis pointing downwards.
Directly towards the origin.
What happens to electric potential energy when two opposite charges that are stationary begin moving toward each other?
It increases as they get closer together.
It decreases as they get closer together.
They become neutralized, resulting in zero electric potential energy.
It remains constant due to conservation of charge.
If you tripled both voltage and resistance across a simple electric circuit, what would be the effect on power dissipation?
Power dissipation would remain unchanged.
Power dissipation would be halved.
Power dissipation would increase by three times its original value.
Power dissipation would reduce to one-third its original value.
A solenoid has n turns per unit length, carries current I creating magnetic field strength H inside; if another wire carrying current I' encircles solenoid n' times per unit length co-axially without touching what will be new magnetic field strength within solenoid assuming I'=I/10 and n'=n/5?
Increased proportionally into sum both individual fields produced separately each entity layered around common axis evidence cumulative nature force carriers contribute generation composite outcomes viewed collectively rather singly understood contextually together.
The original plus additional contribution due to encircling wire calculated by Ampere's Law considering independent contributions add linearly given conditions.
Remains unaltered despite presence secondary source owing cancellation effects arise oppositions set up competing vectors aligned antagonistically causing mutual nullification resultant vector magnitudes directly involved scenario presented question asked hence no change detected final output measured accordingly correct answer.
Initial value reduced by factor dependent on quotient I'/In' reflecting influence external currents exert over existing fields determined through application superposition principle intertwined scenarios like described situation here.
A volt meter is used to measure potential difference; where should you place it in your experiment setup?
Parallel to have the same potential difference as the load device being measured.
In parallel but isolated from the main circuit having no effect.
Directly across shorting two points creating a short-circuit hazard.
In series between components, drooping circuit potential.

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If a non-conducting disk of radius R rotates with angular velocity ω in the presence of a uniform magnetic field B perpendicular to the disk, what is the induced electric field E at a distance r from the center (r < R) due to this rotation?
E = B \omega \frac{r}{R}
E = \frac{B \omega r}{2}
E = B \omega r
E = \frac{B \omega r^2}{2R}
How does increasing dielectric strength affect capacitance when two parallel plates are separated by dielectric material?
The capacitance increases.
The capacitance may increase or decrease depending on other factors.
The capacitance decreases.
The capacitance remains unchanged.
Which component would you use separately to create oscillating current?
A diode by itself which allows current to pass in one direction and does not produce oscillation.
A capacitor by itself because it blocks direct current while allowing alternating current.
A resistor by itself as it adjusts current flowing through the circuit based on Ohm's law.
An inductor by itself since it can cause oscillation due to generating EMF opposing changes in current.