gc textbook chapter 17 Electric Potential (id: d83fac648)

本题目来源于试卷: gc textbook chapter 17 Electric Potential，类别为 通用国际物理

[填空题]
In a television picture tube, electrons are accelerated by thousands of volts(vhyx qk-ou58, bfo p2 1+1+cnw qfiqlthrough a v1+n + iqlqfcw1acuum. If a television set were laid on its back, would electrons be able to move upward against the force of gravity? What potential difference, acting over a distance of 3.0 cm, would be needed to balance the downward force of gravity so that an electron would remain stationary? Assume that the electric field is uniform.    $ \times10^{ -12}\,V$

参考答案: 1.7±2%


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