15. If I short out a D cell and draw a current of 7 A for 5 s, how many coulombs

Question

15. If I short out a D cell and draw a current of 7 A for 5 s, how many coulombs of charge move through the circuit? (Points : 1)
- 7 C
- 5 C
-7/5 C
-35 C
-5/7 C


16. When a 12 volt car battery is short circuited with a wire, the current drawn from the battery is 100 amperes. The resistance of the wire is (Points : 1)
- Zero
- 0.12 ohms
- 8.33 ohms
- 1200 ohms
- none of the above


17. The energy used by a 100 watt light bulb in 1 hour is (Points : 1)
- 0.01 J
-360,000 J
- 100 J
- 6,000 J
- none of the above

Explanation / Answer

15)q=I*t= -5*7= -35C option d 16) R= V/I = 12/-100 = -.12 17) E= P*t = 100*3600 = -360000J

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