A positive effect of the invention was that it required less fuel to run and it was twice as efficient.
The Watt Steam engine
The Watt steam engine was developed in the year 1763. The invention was by James Watt.
The positive effect that this invention had during the industrial revolution was that it was very efficient and helped to reduce the excess use of fuel.
This meant a financial gain for the people using it because they would run it with less money.
Read more on the industrial revolution here:
https://brainly.com/question/15990232
