A torch bulb is rated 5 V and 500 mA. Calculate Its
Energy consumed when it is lighted for `2½` hours

Explanation

To solve the problem of calculating the energy consumed by a torch bulb rated at 5 V and 500 mA when it is lighted for 2.5 hours, we can follow these steps:

### Step 1: Understand the given values
- Voltage (V) = 5 volts
- Current (I) = 500 mA = 500 × 10^(-3) A = 0.5 A
- Time (t) = 2.5 hours

### Step 2: Convert time from hours to seconds
...