Two tangent galvanometers A and B have coils of radii 8 cm and 16 cm respectively and resistance `8 Omega` each. They are connected in parallel with a cell of emf 4 V and negligible internal resistance. The deflectioins porduced in the T.G.’s A and B are `30^@` and `60^@` respectively. If A has 2 turns, then B must have

Options

A. 6 turns
B. 2 turns
C. 18 turns
D. 12 turns

Answer

D