Transformers are used in between the electric power stations and homes or factories in order to
minimize the power loss in transmission cables
minimize the voltage drop in transmission cables
minimize the current drop in the transmission cables
provide constant voltage at the user end
Answer is Right!
Answer is Wrong!
This question was previously asked in
UPSC CAPF – 2011
Electric power is transmitted over long distances through cables. These cables have resistance, and power is lost as heat according to the formula P_loss = I² * R, where I is the current and R is the resistance of the cable. To minimize this power loss for a given amount of power being transmitted (P = V * I), the voltage (V) is stepped up to a very high level by transformers at the power station. This high voltage means the current (I) required to transmit the same power is much lower (I = P/V). A lower current significantly reduces the power loss (I²R) in the transmission lines. At the receiving end, transformers step the voltage back down for safe use in homes and factories.