An electric wire and coil covered with a cured product of a heat- or photo-curable fluorinated polymer and having high insulating properties and high productivity. An electric wire having a conductor wire and a covering layer covering the outer periphery of the conductor wire. The covering layer is made of a cured product of a curable composition which has a fluorinated polymer containing at least three functional groups represented by the following formula (F): —Rf1COZ1 (F). In formula (F), Rf1 is a single bond, a fluoroalkylene group, or a fluoroalkylene group with at least two carbon atoms having an etheric oxygen atom between carbon-carbon atoms, Z1 is NR1NR2H, NR3OR4 or OR5, and R1, R2, R3, R4 and R5 are each independently a hydrogen atom or an alkyl group.