Magnetism and Electromagnetic Induction

Compression work done on a gas when a piston is pushed down.

Heat conduction through a metal rod held over a flame.

The boiling of water by convection as it is heated in a pot.

Heat transfer from the Sun to Earth across empty space.

Galvanomagnetic effect determined by motion of person relative to Earth's magnetic field.

Photovoltaic effect originating from light sources inducing currents in carpet fibers.

Seebeck effect due to temperature difference between feet and carpet.

Piezoelectric effect generated by compression friction forces between shoes and carpet fibers.

No change occurs because self-inductance depends solely upon physical dimensions not material properties.

Increases resistance but not self-inductance as this relies on material conductivity rather than magnetism.

It reduces inductance since iron's resistivity creates losses via heat dissipation.

Inductance increases due to higher permeability facilitating more efficient lines-of-force bundling.

Measuring Earth's geomagnetic field directly at different times of day without involving any coils or additional apparatuses.

Shielding half of your trials from Earth’s geomagnetic field using mu-metal and comparing results with unshielded trials for discrepancies.

Using an identical coil set-up at varying altitudes without considering shielding or controlling other variables impacting flux readings.

Ignoring Earth’s geomagnetic influence altogether assuming it's negligible compared to other experimental fields applied.

Increasing distance between trials without altering procedure otherwise.

Painting bar magnet ends different colors with no functional purpose adjustment.

Using motion sensors to precisely control and measure magnet speed during each trial.

Replacing copper wire with aluminum wire for better conductivity.

The magnetic flux through the coil halves.

The magnetic flux through the coil quadruples.

The magnetic flux through the coil remains unchanged.

The magnetic flux through the coil doubles.

Incorrect Answer

Incorrect Answer

It laid groundwork for tech such as electric generators & alternating-current motors based on time-varying fields' ability to induce currents.

Incorrect Answer

$BLw\omega$

$BL^{2}\omega$

$Bw^{2}\omega$

$\frac{Bw\omega}{L}$

Ampere (A)

Newton (N)

Ohm (Ω)

Volt (V)

When it is parallel to the field lines.

When it is at a certain angle to the field lines.

When it is perpendicular to the field lines.

When it rotates.