This diagram of the first right-hand rule relates which two quantities? a) current (thumb) to magnetic field (fingers)b) magnetic field (thumb) to current (fingers)c) current (thumb) to force (fingers)d) force (thumb) to current (fingers)

Option A, current (thumb) to magnetic field (fingers)

As per the First right-hand rule,

Using right hand, if we suppose that thumb points towards the electric current

fingers curl towards the magnetic field

since you're a real machine, your ama is always less than your ima, because you can never totally eliminate friction.

c

explanation: