Answer:
Hey buddy, it is D
Explanation: Just do the math, take 30 and then subtract 20 ok and then yo would have 10, then the 10is really the 30 and the 30 is pointing to the left so 10 newtons to the left and also your welcome
The best answer is D. field lines should always be crossing each other.
For both NPN and PNP this is true:
The base is between the collector and the emitter.
I believe that the answer is B. 133 N