A, 1 J of electrical potential energy is transferred in passing 10 C of charges from X to Y.
B. 10 J of electrical potential energy is transferred in passing 1 C of charges from X to Y.
What is the difference between two answers? Which is correct? WHY?
The potential difference between two points X and Y in a circuit is 10V. Which of the following must be correct ?
2016-02-28 12:40 pm
回答 (1)
2016-02-29 1:52 am
The difference between two options :
Different potential energies (may be true or false) are transferred in passing different given quantities of charges across a fixed voltage.
A. false
When V = 10 V and Q = 10C :
Electrical P.E. = Q V = 10 × 10 = 100 J ≠ 1J
B. true
When V = 10 V and Q = 1C :
Electrical P.E. = Q V = 1 × 10 = 10 J
...... The answer is B.
Different potential energies (may be true or false) are transferred in passing different given quantities of charges across a fixed voltage.
A. false
When V = 10 V and Q = 10C :
Electrical P.E. = Q V = 10 × 10 = 100 J ≠ 1J
B. true
When V = 10 V and Q = 1C :
Electrical P.E. = Q V = 1 × 10 = 10 J
...... The answer is B.
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