Faraday's laws of electromagnetic induction may be expressed by the equation ε∝NdtdΦ .
(a) Explain what each of the terms in this equation is.
(b) If Φ=BA , expand the equation so that Faraday's laws have two terms for ε .
(c) How does this suggest that there are two ways of inducing an emf? Outline these two ways.