Modern trains are based on Maglev technology in which trains are magnetically elevated which runs its `EDS` Maglev system.
There are coils on both sides of wheels.Due to motion of train current induces in the coil of track which elevate it.This is in accordance with Lenz's law.If trains lower down then due to Lenz's law a repulsive force increases due to which train gets uplifted and if it goes much high then there is a net downward force due to gravity.
The advantage of maglev train is that there is no friction between the train and the track, thereby reducing power consumption and enabling the train to attain very high speeds.
Disadvantage of maglev train is that as it slows down the electromagnetic forces decreases and it becomes difficult to keep it elevated and as it moves forward according to Lenz law there is an electromagnetic drag force.
What is the advantage of this system ?

Options

A. No friction hence no power consumption
B. Electric power is used
C. Gravitation force is zero
D. Electrostatic force draws the train

Explanation

To determine the advantage of the Maglev train system based on the provided information, we can analyze the key points step by step.

### Step-by-Step Solution:

1. **Understanding Maglev Technology**:
- Maglev (magnetic levitation) trains operate using magnetic forces to lift and propel the train along the track. This system eliminates physical contact between the train and the track.

**Hint**: Think about how magnetic forces can create lift without contact.

2. **Induction and Lenz's Law**:
- As the train moves, it induces a current in the coils of the track due to electromagnetic induction. According to Lenz's law, this induced current generates a magnetic field that opposes the change causing it, resulting in a repulsive force that lifts the train.

**Hint**: Recall how Lenz's law relates to induced currents and magnetic fields.

3. **Advantages of No Friction**:
- One of the primary advantages of the Maglev system is the absence of friction between the train and the track. This leads to reduced wear and tear on both the train and the track, as well as lower energy consumption.

**Hint**: Consider how friction affects energy efficiency and speed in traditional trains.

4. **High Speeds**:
- The lack of friction allows Maglev trains to achieve much higher speeds compared to conventional trains. This is because they can accelerate more efficiently without the resistance that friction creates.

**Hint**: Think about the relationship between speed and energy loss due to friction.

5. **Conclusion**:
- The main advantage of the Maglev train system is that it operates with no friction, which significantly reduces power consumption and allows for very high speeds.

**Final Answer**: The advantage of the Maglev train system is that there is no friction between the train and the track, thereby reducing power consumption and enabling the train to attain very high speeds.