- #1
blackout85
- 28
- 1
A certain sample carries a current of 4 A when the potential difference is 2V and a current of 10 A when the potential difference is 4V. This sample:
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
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