At what frequency is A.C. supplied to residential houses ?

Explanation

To determine the frequency at which alternating current (A.C.) is supplied to residential houses, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding A.C. Supply**:
- A.C. (Alternating Current) is the type of electrical current that reverses direction periodically. The frequency of A.C. is measured in Hertz (Hz), which indicates the number of cycles per second.

2. **Common Frequencies**:
...