Question

How can energy losses in a transformer be minimised?

Hint:

In a transformer, reducing the resistance of the wires minimizes energy losses, as power loss is proportional to the square of the current and the resistance.

Answer 1

Step 1: Understanding the energy loss in a transformer.
The energy losses in a transformer are mainly due to resistance in the wires. The power loss due to resistance is given by the formula: \[ P_{\text{loss}} = I^2 R \] where \( I \) is the current and \( R \) is the resistance.
Step 2: Minimising energy losses.
To minimise energy losses, we need to reduce the resistance \( R \). This can be achieved by using thicker wires, as thicker wires have lower resistance. Thus, by decreasing \( R \), the power loss \( P_{\text{loss}} \) also decreases.
Step 3: Conclusion.
Therefore, energy losses can be minimised by using thick wires to reduce the resistance.