Assignment:
Question 1. 45 A of current passes through a cross section of wire. How many charges pass through in 3 seconds?
A. 9.375 x 10^19
B. 3.59 x 10^16
C. 2.16 x 10^17
D. 8.4 x 10^20
Question 2. A 30 ohm resistor dissipates 500W of power. What current is running through the resistor?
A. 15000 A
B. 16.6 A
C. 4.06 A
D. 0.052 A
Question 3. How is current affected if the number of charge carriers decreases?
A. The current increases.
B. The current decreases.
C. The current initially decreases and then is gradually restored.
D. The current is not affected.
Question 4. The current in an electron beam in a cathode-ray tube is 7.0 x 10^-5 A. How much charge hits the screen in 5.0 s?
Question 5. A wire carries a steady current of 0.1 A over a period of 20 s. What total charge moves through the wire in this time interval?