Electric Force, Field, and Potential

Insulator

Conductor

Semiconductor

Superconductor

Friction between two pieces of cloth

A magnetic attraction between two closely placed charged balloons

Heat transfer from a hot body to a cold body

The gravitational pull between the Earth and the Moon

The force decreases due to the inverse square law relation with distance.

The force remains unchanged since one sphere is still neutral.

The force becomes repulsive due to polarization effects in the neutral sphere.

The force increases because of their increased proximity and induction causing an attractive interaction.

Capacitance increases due to increased area allowing more charge storage at a given voltage.

Capacitance initially increases but then decreases due to saturation effects beyond certain size thresholds.

Capacitance remains unchanged since the separation distance has not been altered.

Capacitance decreases because larger plates produce stronger fields which oppose additional charging.

Use a Coulter counter to detect changes in particle concentration not recognizing that it cannot differentiate between charges on particles.

Implement optical tweezers methodology to isolate and manipulate single particles while accounting for possible laser-induced ionization effects as errors.

Employ electrophoresis to measure particle mobility but fail to account for fluid viscosity impacting the experiment outcomes.

Place particles near a charged plate monitoring motion while overlooking how uniform field strength does not mimic point charge interactions.

Point A experiences no net electric field because it has equal opposite charges nearby canceling out effects.

Point C experiences no net electric field due to symmetry when BCD form an equilateral triangle with A far away from D.

No such point exists where net electric field would be zero under this arrangement except at infinity.

Point B experiences no net electric field owing to equal linear distances from adjacent charges causing cancellation.

The potential energy remains constant because no additional charge was added to the plates.

The potential energy increases as work must be done against the attractive forces between opposite charges on each plate.

The potential energy decreases since there is more space for charge distribution.

The potential energy turns into kinetic energy as plates repel each other due to like charges.

Solely by conduction from container to liquid throughout.

By convection within the liquid and then by vaporization at the surface.

By adiabatic processes without any phase change or fluid movement.

Primarily through radiation from surrounding air to water surface.

The de Broglie wavelength would quadruple since h appears in the numerator under a square root in its formula.

The de Broglie wavelength would halve since it is inversely proportional to momentum which increases with h.

The de Broglie wavelength would double due to its direct proportionality with h.

The de Broglie wavelength would remain unchanged as it depends solely on V.

Laser cooling/trapping techniques enabling precise control over electrons positioning.

Graphene-based transistors allowing observation at atomic thickness scales.

Nanoscale lithography improving resolution limits for structuring electronic components.

Quantum dot fabrication providing insights into semiconductor behavior under fields.