Acircular coil (710 turns, radius = 0.065 m) is rotating in a uniform magnetic field. at t = 0 s, the normal to the coil is perpendicular to the magnetic field. at t = 0.018 s, the normal makes an angle of 45o with the field because the coil has made one-eighth of a revolution. an average emf of magnitude 0.084 v is induced in the coil. find the magnitude of the magnetic field at the location of the coil.

if you already have the answer to (a), then just work out how many periods there are in 1 minute, and that's the answer to (c).

the best answer for these questions would be:

1.            c. is smaller

2.            d) concrete operational

3.            b) interaction with the environment – the children interact with their environment can them learn more.

4.            a) parents who reason openly with children can limit a child’s cognitive ability.