The induced EMF in a conducting rod moving away from a wire with current I will be in the opposite direction to the current in the wire. This is known as Lenz's Law.
The faster the rod moves away from the wire, the greater the induced EMF will be. This is because a faster movement creates a stronger magnetic field around the wire, leading to a larger change in magnetic flux and therefore a greater induced EMF.
The magnitude of the induced EMF is affected by the strength of the current in the wire, the speed of the rod, and the distance between the wire and the rod. It is also affected by the angle between the wire and the rod's direction of motion.
Yes, the direction of motion of the rod can affect the induced EMF. If the rod moves perpendicular to the current in the wire, the induced EMF will be at its maximum. If the rod moves parallel to the wire, there will be no induced EMF.
The induced EMF can be calculated using the formula E = Blv, where B is the magnetic field strength, l is the length of the rod, and v is the velocity of the rod. It can also be calculated using Faraday's Law of Induction, which states that the induced EMF is equal to the rate of change of magnetic flux through the circuit.