Magnetic Flux Density (Leaving Cert Physics): Flashcards

Strength of a magnetic field

$B$

Vector quantity

Force on 1m conductor carrying 1A perpendicular to field

Direction of force on north magnetic pole

Tesla (T)

$B$ when 1m conductor with 1A experiences 1N perpendicular to field

$F = BIL$

Force on conductor (newtons)

Current through conductor (amperes)

Length of conductor in field (metres)

$B = \frac{F}{IL}$

$\text{kg} \cdot \text{s}^{-2} \cdot \text{A}^{-1}$

Equal magnitude, opposite direction

Basic principle of electric motors