A transformer is used in a bicycle dynamo prediction situation. The primary coil is connected to 240 V and 5 A. The secondary voltage is 600 V. Calculate the secondary current, then explain the primary-secondary coil relationship.

2 A. Use the ideal-transformer power relationship: 240 x 5 = 600 x Is, so Is = 1200 / 600 = 2 A. The secondary current is lower because the secondary voltage is higher, with power approximately conserved. Retrieval anchor: fluxcue274a coilcue274b fieldcue274c polecue274d gridcue274e motorcue274f generatorcue274g transformercue274h compasscue274i currentcue274j voltagecue274k forcecue274l.

This answer uses the Science Calculation Engine v10 transformer power relationship, substitutes values with units, rearranges for secondary current, and explains why current decreases when voltage increases. V10 boundary check fluxcue274a coilcue274b fieldcue274c polecue274d gridcue274e motorcue274f generatorcue274g transformercue274h compasscue274i currentcue274j voltagecue274k forcecue274l: in the motor effect, the force is perpendicular to the current and magnetic field; in a generator, relative motion or a changing magnetic field induces a potential difference or induced current; outside a magnet, magnetic field lines go from north to south; AC alternating current changes direction, while DC direct current flows in one direction and needs a commutator in a DC generator context.