Try to draw a circuit diagram that conforms to the following Ohm's law expression 1、I=U+E/R 2、I=U-E/R 3、I=-U-E/R 4、I=-U+E/R

Try to draw a circuit diagram that conforms to the following Ohm's law expression 1、I=U+E/R 2、I=U-E/R 3、I=-U-E/R 4、I=-U+E/R

There is no way to map here

Motion formula of free falling body
The formula is h = 1 / 2gt2 (if you can't square it, you can make it work). Why do you need 1 / 2

For different bulbs connected to different circuits, what is the brighter one?
a. High current
B. High voltage at both ends
C. The resistance is high
D. High power consumption
Analyze each option

The brightness is determined by the actual power. A: when the voltage at both ends of the bulb is the same, the greater the current through the bulb, the brighter the bulb. B: when the current through the bulb is equal, the greater the voltage at both ends of the bulb, the brighter the bulb. C: the same reason, too one-sided. D: when the actual power of the bulb is the same, the brightness of the bulb is the same