Which element provides anti-ice power for rotor blade parting strips?

The element that provides anti-ice power for rotor blade parting strips is the slip ring assembly. The slip ring assembly is a crucial component that allows the passage of electrical power to rotating parts of the rotor system without the need for physical connections that would wear out or break. In the context of rotor blade parting strips, the slip rings facilitate the transfer of electrical energy from the stationary parts of the helicopter to the rotating rotor blades. This electrical energy is then used to power the electric heaters embedded in the parting strips, preventing ice accumulation and ensuring safe and efficient rotor blade operation during flight in icy conditions.

The other options mentioned do not fulfill this specific function. Electric heater controls manage and regulate the power supplied to the heaters but do not provide the power themselves; rather, they receive power through the slip ring assembly. The fuel management system is focused on the distribution and efficiency of fuel usage in the aircraft, while the hydraulic circuit primarily deals with the operation of flight control surfaces and other hydraulic systems, not electrical power distribution.