White balance works by adjusting the amount of sensitivity between colours. It can for example make a picture have more warm or more cold colours. And it can make colours more visable and or more real.
The white balance setting normal has the letter K and the lower the K the more warm colours (towards red) and the higher the K the more cold colours (towards blue).
And there’s no impact on the sensor.
By JK, Jef Koelewijn