A charge of #4 C# is passing through points A and B on a circuit. If the charge's electric potential changes from #21 J# to #17 J#, what is the voltage between points A and B?

Answer 1

Leo Abeyta

The voltage between points A and B is 1.0 V.

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Answer 2

William Audy

#v_(AB)=-1 V#

#"work doing by electrical forces between two points is given as: " Delta W=q*(V_B-V_A)# #V_b-V_A=V_(AB)" we can write"# #17-21=4*v_(AB)# #-4=4*v_(AB)# #v_(AB)=-1 V#

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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