Assertion : It is advantageous to transmit electric power at high voltage.
Reason: High voltage inmplies high current.

Explanation

To solve the question, we need to analyze both the assertion and the reason provided.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "It is advantageous to transmit electric power at high voltage." This is true because transmitting power at high voltage reduces the current flowing through the transmission lines.

2. **Understanding the Power Formula**:
- The power transmitted (P) can be expressed using the formula:
\[ P = V \times I \]
- Where \( P \) is the power, \( V \) is the voltage, and \( I \) is the current.

3. **Analyzing the Effect of High Voltage**:
- If we want to transmit a constant amount of power (P) and we increase the voltage (V), the current (I) must decrease. This is derived from rearranging the power formula:
\[ I = \frac{P}{V} \]
- As \( V \) increases, \( I \) decreases, assuming \( P \) remains constant.

4. **Heat Loss in Transmission**:
- The heat loss in the transmission lines due to resistance (R) is given by:
\[ H = I^2 \times R \]
- Since the current \( I \) decreases when voltage increases, the heat loss \( H \) also decreases because it is proportional to the square of the current.

5. **Conclusion on the Assertion**:
- Therefore, transmitting power at high voltage is indeed advantageous because it reduces heat losses in the transmission lines.

6. **Analyzing the Reason**:
- The reason states "High voltage implies high current." This is incorrect. As we established, increasing voltage while keeping power constant results in a decrease in current.

7. **Final Evaluation**:
- The assertion is true, but the reason is false. Hence, the correct conclusion is that the assertion is correct, and the reason is incorrect.

### Final Answer:
- Assertion: True
- Reason: False