Answer
See explanation.
Work Step by Step
The equation for the induced emf in this situation, at the top of page 962, shows the induced emf is proportional to the angular speed $\omega$ and also changes at the angular speed $\omega$.
The torque required to turn the loop does change. According to equation 27.28, the torque required to turn the loop is proportional to the current in the loop. Assuming that the generator is part of a circuit so that a current flows, the maximum emf has doubled, so the maximum current has also doubled, and the maximum torque required also doubles.
