- #1

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A) obeys Ohm law

B) has a resistance of 0.5 ohms at 1V

C) has a resistance of 2.5 ohms at 1V

D) has a resistance of 2.5 ohms at 2V

E) does not have a resistance

my work:

R= V/I= (2/4) = .5

R= (4/10)= .4

The answer according to the book the answer is B. I do not see how they got that answer could someone please explain. Thank you