Question

You have to find the amount of time it takes to charge a smartphone to charge level atleast I given its initial charge level S But the charger is smart, and charges at different rates depending on the charge level in smartphone to prevent damage to the battery You are given a smartphone with an efficient charger The initial amount of charge in the smartphone is S It charges the smartphone at different rates depending upon the amount of charge available in the phone to prevent the battery of the phone from any damage Assuming that the current amount of charge available in the phone is the rates at which the phone is charged R in units per minute are as follows Assuming current charge level is c the rates R of charging are (in units per minute) 0 0 10. R 10 11 C 230, R5 231 ( 559 R 560 1009 R 2 1010 C 5000 R 7​

Answer 1

Answer:

MARK ME THE BRAINLIEST PLZPLZ

Answer 2

Answer:

while you use your phone normally it heats, this is due to many reasons but they do produce heat normally. Your batter produces heat while charging (why they produce is another topic ). if there are two heat sources your phone might heat up badly and this can reduce your battery life.

Explanation:

• You don't need to teach your phone how much capacity the battery has by going from full to zero, or zero to full, charge.” Samsung advises charging regularly and keeping the battery above 50 percent. The company also says that leaving your phone connected while it's fully charged may shorten the battery life.
• This is actually a complex problem. The job is typically delegated to a device called a coulomb counter. This is built into the battery management system in the phone.
• The base principle is just to count how much energy is going in and out of the battery to guess how much is left. It’s pretty much like putting an ammeter (a tool that measures electrical flow) on the connection to the battery. It’s hard to do this without wasting power, and it’s even harder to predict how a battery will discharge over a variety of circumstances. Extra heat, higher discharge and old age will all waste power inside the battery in ways that the coulomb counter can’t easily measure.
• So, in addition to just measuring the flow, a coulomb counter watches the battery’s voltage (the total electrical “pressure”) to take a guess as to how much power is left in the battery and learn its capacity as it ages. This is complex too, because chemical reactions hold the energy, and that voltage is just a side-effect that suggests maybe how much energy is left in the battery. The voltage fluctuates a lot depending on other factors, such as discharge rate (sometimes call the “C” rate).And last, a battery that has been damaged from deep discharge (sitting around while dead), excess heat, short-circuit and overcharging will discharge in a very different way that is also hard to predict. (Note: cell phones protect against overcharging and short-circuit, so don’t worry about these!)