Alternating current is transmitted to distant places at

Options

A. at high voltage and low current
B. at high voltage and high current
C. at low voltage and low current
D. at low voltage and high current

Answer

To solve the question regarding how alternating current is transmitted to distant places, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Power Transmission**:
- When transmitting electrical power over long distances, we need to consider the power loss due to the resistance of the transmission wires.

2. **Power Loss Calculation**:
- The power loss (P_loss) in the transmission line can be expressed using the formula:
\[ P_{\text{loss}} = I^2 R \]
- Here, \(I\) is the current flowing through the wire, and \(R\) is the resistance of the wire.

3. **Minimizing Power Loss**:
- To minimize the power loss, we need to minimize the current \(I\) since the resistance \(R\) is constant for a given wire.

4. **Power Conservation**:
- The power transmitted from the power station is given by:
\[ P = V \times I \]
- Where \(V\) is the voltage. To keep the power \(P\) constant while minimizing \(I\), we must increase \(V\).

5. **Conclusion**:
- Therefore, to transmit alternating current efficiently over long distances, we transmit at **high voltage** and **low current**. This approach reduces the power loss in the transmission lines.

6. **Final Answer**:
- The correct answer is that alternating current is transmitted to distant places at **high voltage and low current**.