电场中A、B两点的电势差UAB＞0，将一负电荷从A移到B的过程中（ _爱下问搜题

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问题选择题

电场中A、B两点的电势差U_AB＞0，将一负电荷从A移到B的过程中（　　）

A．电场力做正功，电势能增加

B．电场力做负功，电势能增加

C．电场力做正功，电势能减少

D．电场力做负功，电势能减少

答案

答案：B

补全对话，情景问答

给下列的句子选择对应的答语。

( ) 1. How are you?
( ) 2. What colour is it?
( ) 3. Good morning.
( ) 4. See you.
( ) 5. Let's go to school.

A. See you.
B. OK.
C. Fine, thank you.
D. Good morning.
E. It's yellow.

名词解释

地层倾向