After some research, market check and taking some people’s advices i decided to buy the raspberry pi 3 B+, this RasPi charges with a 5V 2.5A microusb charger. The thing is that i ordered the wrong charger, the 5V 3A Usb-c charger for raspberry pi 4, and now due to coronavirus i can’t return the charger. Is there any problem for me to just use this charger with an adapter from USB C to MicroUSB?
Another unrelated question, my RasPi came without the OS installed, so I proceeded to download raspberry pi imager on my computer and installed the os inside an sd card, my question is, I have to turn on the raspberry pi with the sd card inserted, and then boot up, afterwards can i erase the os from the sd carD?