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The video provides a brief introduction to power banks, explaining their basic function and purpose.

What is the primary function of a power bank?

• To provide internet connectivity

• To store electrical energy for later use

• To generate electricity

• To convert solar energy into electrical energy

Which component is essential for a power bank to store energy?

• Solar panel

• Battery

• Transformer

• Capacitor

How does a power bank release stored energy?

• Through a USB port

• Through a light bulb

• Via a wireless connection

• By converting it to kinetic energy

Which type of power bank is best for frequent travelers?

• Wireless power bank

• High-capacity power bank

• Mini power bank

• Solar power bank

What is a key advantage of using a solar power bank?

• It is the cheapest option

• It has a higher capacity than others

• It can be charged using sunlight

• It is lightweight