2011 · Q47
Transformers are used in between the electric power stations and homes or factories in order to
general-sciencephysics-electricity
- Aminimize the power loss in transmission cables
- Bminimize the voltage drop in transmission cables
- Cminimize the current drop in the transmission cables
- Dprovide constant voltage at the user end
Explanation
Transformers step voltage up for transmission (cutting current and hence I²R losses) and step it down for use; minimizing power loss in transmission is their primary purpose. The source page's key misprinted this as (d); corrected against the independent key for this exact CAPF 2011 question.