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spring 2017 su Physics 212 Name J Number Test 2A A) only the current is doubled B) only the current is halved C) only the resistance is doubled D) only the resistance is halved are doubled E) both the current and resistance 7. A 10 ohm resistor has a constant current. If 1200 Cof charge now through it in 4 minutes what is the Answer. value of the current? A) 3.0 A B) 5.0 A D) 120 A E) 300 A Answer. 8. This figure shows junction. What is true of the currents? a B) iza io it C) io il -i, D) in 9. How is the direction of current flow defined in a conductor? Answer a) It is in the direction of the force on a charged particle. b) It is in the that the atoms move. particles would move. c) It is in the direction that d) It is in the direction that negatively charged particles would move. e) It is up to the person doing a given problem to decide the direction. 10. In the diagram Ri Rs. Rank the three resistors according to the cument in them, least to R2 Answer greatest. A) 1, 2, 3 B) 3, 2, 1 C) 1, 3, 2 D) 3, 1, 2 E) All are the same 11. In the diagram, the current in the 3 resistor is 4 A. The potential difference between points 1 and 2
0 0
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Answer #1

Q7.

R = 10 Ohm
Q = 1200 C
t = 4 mins = 240 s

I = Q/t = 1200/240 = 5 A
So, Option B

Q8.
Option D
i1 = i0 - i2
since i0 = i1 + i2


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