Calculate the time taken by a 25 W bulb to transform 3000 J of energy.

Answer

To solve the problem of calculating the time taken by a 25 W bulb to transform 3000 J of energy, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the relationship between power, energy, and time**:
The formula that relates power (P), energy (E), and time (T) is given by:
\[ P = \frac{E}{T} \]
where:
- \( P \) is the power in watts (W),
- \( E \) is the energy in joules (J),
- \( T \) is the time in seconds (s).

2. **Rearrange the formula to solve for time (T)**:
To find the time taken, we can rearrange the formula:
\[ T = \frac{E}{P} \]

3. **Substitute the known values into the formula**:
We know that:
- Power \( P = 25 \, \text{W} \)
- Energy \( E = 3000 \, \text{J} \)

Plugging these values into the rearranged formula gives:
\[ T = \frac{3000 \, \text{J}}{25 \, \text{W}} \]

4. **Calculate the time (T)**:
Now, perform the division:
\[ T = \frac{3000}{25} = 120 \, \text{s} \]

5. **Conclusion**:
The time taken by the 25 W bulb to transform 3000 J of energy is 120 seconds.