PHY 102 Insight Mock Test Practice Flashcards

A set of vocabulary flashcards covering SI units, fundamental laws of electromagnetism, and wave optics based on the PHY 102 Insight Mock Test.

SI unit of electric charge

Coulomb

Coulomb's Law

The electrostatic force between two point charges, expressed as $F = \frac{k q_{1} q_{2}}{r^2}$

Energy stored in a capacitor

The energy calculated by the expression $U = \frac{1}{2} C V^2$

Electric field intensity ($E$) between parallel plates

The potential difference ($V$) divided by the separation distance ($d$), expressed as $E = \frac{V}{d}$

Equivalent resistance in parallel

The total resistance of resistors connected such that $\frac{1}{R_{eq}} = \frac{1}{R_{1}} + \frac{1}{R_{2}} + \frac{1}{R_{3}}$, which for $6\,\Omega$, $3\,\Omega$, and $2\,\Omega$ equals $1\,\Omega$

Equipotential surface

A surface where all points have the same electric potential.

Total charge flow ($Q$)

The product of current ($I$) and time ($t$), calculated as $Q = I \times t$

Force on a current-carrying conductor

The force ($F$) experienced in a magnetic field, given by $F = B I L \sin(\theta)$, where $B$ is magnetic flux density, $I$ is current, and $L$ is length.

SI unit of magnetic flux density

Tesla

Lenz's Law

A law stating that induced current direction opposes change in flux, which is a consequence of the law of conservation of Energy.

Magnetic field ($B$) at the centre of a circular coil

A field that is proportional to $\frac{I}{r}$, where $I$ is current and $r$ is the radius of the coil.

Faraday's Law of electromagnetic induction

States that the induced EMF is equal to the negative rate of change of magnetic flux.

Young's double-slit experiment

An experiment that demonstrates the property of Interference in light.

Fringe width ($\beta$)

The distance between fringes in a double-slit experiment, given by $\beta = \frac{\lambda D}{d}$

Destructive interference

Occurs when the path difference between two waves is $(2n - 1) \frac{\lambda}{2}$

Diffraction

A property of light that is most pronounced when the size of the obstacle or aperture is comparable to the wavelength.