Final answer:
To calculate the current in the solenoid, we need more information.
Step-by-step explanation:
To calculate the current in the solenoid, we can use the formula B = μ₀nI, where B is the magnetic field, μ₀ is the permeability of free space, n is the number of turns per unit length, and I is the current. Given that the solenoid is 2.1 m long with an inner radius of 27 cm and 1000 turns of wire, we can calculate the number of turns per unit length: n = 1000 / (2π × 0.27 m) = 116.48 turns/m. The magnetic field is not given, so we cannot directly calculate the current in the solenoid. Additional information is needed.