A ` 2k W` heater used for `1 h` every day consumes the following electrical energy in `30 days`

Options

A. `60 units`
B. `120 units`
C. `15 units`
D. none of the above

Explanation

To solve the problem of how much electrical energy a 2 kW heater consumes in 30 days when used for 1 hour each day, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the power of the heater**:
The power of the heater is given as 2 kW (kilowatts).

2. **Determine the usage per day**:
The heater is used for 1 hour every day. Therefore, the energy consumed in one day can be calculated using the formula:
\[ \text{Energy (in kWh)} = \text{Power (in kW)} \times \text{Time (in hours)} \]
Substituting the values:
\[ \text{Energy per day} = 2 \, \text{kW} \times 1 \, \text{h} = 2 \, \text{kWh} \]

3. **Calculate the total energy consumed in 30 days**:
To find the total energy consumed over 30 days, multiply the daily energy consumption by the number of days:
\[ \text{Total Energy} = \text{Energy per day} \times \text{Number of days} \]
Substituting the values:
\[ \text{Total Energy} = 2 \, \text{kWh/day} \times 30 \, \text{days} = 60 \, \text{kWh} \]

4. **Convert the energy to units**:
In electrical billing, 1 kWh is often referred to as 1 unit. Therefore, the total energy consumed in 30 days is:
\[ \text{Total Energy in units} = 60 \, \text{units} \]

### Final Answer:
The 2 kW heater consumes **60 units** of electrical energy in 30 days.

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