Physics

Question

2. Which of the following is equivalent to one ampere?
(Points : 1)
10 s/10 C

10 C/10 m

1.5 C/1.5 s

15 C/10 s

Question 3.3. A stream of moving charges results in a current of 5.6 A. How long does 116 C of charge take to flow past a fixed point?
(Points : 1)
2.0 s

5.6 s

11.2 s

21 s

Question 4.4. How much power does a radio use if a 12.0 V battery supplies 2.0 A of current?
(Points : 1)
0.2 W

6.0 W

12.2 W

24 W

Question 5.5. Which of the following is a reasonable power rating on an electric oven?
(Points : 1)
220 V

8.0 A

10.0 kW

50.0 kW-h

Question 6.6. Which of the following is required for electric current to flow?
(Points : 1)
battery only

copper wire only

battery and copper wire

battery and light bulb

Question 7.7. How much current does a 310 W device draw when given a voltage of 120 V?
(Points : 1)
4.0 × 102 A

2.6 × 100 A

4.2 × 102 A

3.6 × 104 A

Answer 1

2.) 1 A = 1 C/s

Question 3.3) 20.7 so around 21

Question 4.4.) I think you need time as well to get this answer for equation V*I*t, but is not then its 24W (Not sure on that though)

Question 5.5.) 220 V

Question 6.6.) Hint: Voltage can be likened to pressure.

Question 7.7) 2.6 × 100 A which is from the efficiency % = Wout/Win * 100

Answer 2

All correct... Except #5. It's 10kw.

6. Battery & copper wire.

Answer 3

Tay is right about 5 and 6. Bless! Thank you! :)