A-Level Physics OCR A H556

6.3.3: Electromagnetism

#6.3.3a

magnetic flux ϕ; the unit weber; $ϕ = BA\cos{θ}$

#6.3.3b

magnetic flux linkage

#6.3.3c

Faraday’s law of electromagnetic induction and Lenz’s law

#6.3.3d

(i) e.m.f. = − rate of change of magnetic flux linkage; $ε = - \dfrac{Δ(Nϕ)}{Δt}$

(ii) techniques and procedures used to investigate magnetic flux using search coils

#6.3.3e

simple a.c. generator

#6.3.3f

(i) simple laminated iron-cored transformer; $\dfrac{n_s}{n_p} = \dfrac{V_s}{V_p} = \dfrac{I_p}{I_s}$

(ii) techniques and procedures used to investigate transformers.

6.3.2

Motion of charged particles

6.4.1

The nuclear atom