Question

Which is the standard form of the alternating EMF?

Options

• \[\varepsilon=\varepsilon_0\cos(\omega t)\]

• \[\varepsilon=\varepsilon_0\sin(\omega t)\]

• \[\varepsilon=\varepsilon_0\omega t\]

• \[\varepsilon=\varepsilon_0/\sin(\omega t)\]

Answer 1

The instantaneous EMF varies sinusoidally with time. Writing its amplitude as \[\varepsilon_0\] gives \[\varepsilon=\varepsilon_0\sin(\omega t)\].