A tall tree, high building or a high pillar may be dangerous during lightning because there are chances that they can collapse. So we should maintain a certain position in an open field which makes our body the smallest target to be struck.

Explanation:

Sparks on electric poles:
When sparks are seen on electric poles, it is usually an indication of a loose wire connection. The sparks occur due to the flow of electricity jumping across the gap between the loose wires. This can be dangerous as it can lead to short circuits, power outages, or even electrical fires.

Causes of loose wires:
There can be several reasons for wires becoming loose on electric poles. Some of the common causes include:

1. Wind and weather: Strong winds, storms, or extreme weather conditions can cause the wires to move and become loose over time.

2. Aging infrastructure: Over time, the materials used for the wiring and the components of the electric pole can deteriorate, leading to loose connections.

3. Human interference: Accidental damage or tampering with the wires during maintenance work or construction activities can also result in loose connections.

Consequences of loose wires:
When wires become loose on electric poles, it can have various consequences:

1. Sparks and electrical arcing: Loose wires can cause sparks and electrical arcing, which can be a safety hazard. These sparks can ignite nearby flammable materials, leading to fires.

2. Power outages: Loose wires can disrupt the flow of electricity, resulting in power outages for the affected area.

3. Electrocution risk: Loose wires can pose a risk of electrocution to anyone who comes into contact with them, including birds, animals, or humans.

4. Damage to electrical equipment: Unstable connections can cause fluctuations in the electrical supply, which can damage appliances, electronics, and other electrical equipment.

Prevention and maintenance:
To prevent loose wires on electric poles, regular maintenance and inspections are essential. This includes:

1. Tightening connections: Regularly checking and tightening the wire connections on electric poles can help prevent them from becoming loose.

2. Replacing damaged components: Any worn-out or damaged components of the electric pole should be replaced promptly to ensure the stability of the wires.

3. Proper installation: Ensuring that the wires are properly installed and secured on the electric poles can prevent them from getting loose due to external factors like wind or weather.

4. Regular inspections: Conducting regular inspections of the electric poles and wires can help identify any potential issues before they escalate.

In conclusion, when sparks are seen on electric poles, it is an indication of loose wire connections. Loose wires can lead to various problems such as power outages, electrical fires, and safety hazards. Regular maintenance and inspections are necessary to prevent and address loose wire connections on electric poles.