UPITN 29/1/80 AYATOLLAHS KHOMEINI AND MADARI, SUPPORTERS CLASH

What is the primary role of a battery in electronic devices?

• To increase screen brightness

• To enhance sound quality

• To provide electrical energy

• To store data

Which process is fundamental to a battery's operation?

• Magnetic induction

• Nuclear fusion

• Chemical reaction

• Thermal conduction

What type of battery is commonly used in smartphones?

• Alkaline battery

• Lead-acid battery

• Nickel-cadmium battery

• Lithium-ion battery

Which of the following is NOT a common application of batteries?

• Operating remote controls

• Fueling gas stoves

• Running household appliances

• Powering electric vehicles

What is a key advantage of lithium-ion batteries over other types?

• Lower cost

• Longer charging time

• Higher energy density

• Heavier weight