Question

15- An electron is accelerated in a cathode ray tube through a difference in potential of 5.0 kV. How much kinetic energy does the electron gain in this process? Write your result in the appropriate units. If your result is 2.0x10-3 N, write the result as 2.0e-3 N Use the letter e and the number of the exponent x next to it to express 10

24- When a 24(omega) resistor is connected to a battery where the terminal-to-terminal voltage is 12.0 V, the current through the circuit is 482 mA. Determine the internal resistance of the battery:

25- Suppose that current I goes to the right of resistor R1, current l goes to the right of resistor R, and current l3 goes to the left of resistor R3. The equation that comes out as a result of applying Kirchhoff's rules to the loop that runs along the perimeter of the circuit, that is, along the entire outer edge of the circuit, is 8.0V R Select one: O a. 8.0 V +, R1-I3R3 = 0 O b. 8.0 V - 1, R, + I3R3 = 0 O c 8.0 V + 1, R, + 13R3 = 0 Od -8.0 V + 1, R, + I3R3 = 0

20-

15- An electron is accelerated in a cathode ray tube through a difference in potential of 5.0 kV. How much kinetic energy does the electron gain in this process? Write your result in the appropriate units. If your result is 2.0x10-3 N, write the result as 2.0e-3 N Use the letter e and the number of the exponent x next to it to express 10

24- When a 24(omega) resistor is connected to a battery where the terminal-to-terminal voltage is 12.0 V, the current through the circuit is 482 mA. Determine the internal resistance of the battery:

25- Suppose that current I goes to the right of resistor R1, current l goes to the right of resistor R, and current l3 goes to the left of resistor R3. The equation that comes out as a result of applying Kirchhoff's rules to the loop that runs along the perimeter of the circuit, that is, along the entire outer edge of the circuit, is 8.0V R Select one: O a. 8.0 V +, R1-I3R3 = 0 O b. 8.0 V - 1, R, + I3R3 = 0 O c 8.0 V + 1, R, + 13R3 = 0 Od -8.0 V + 1, R, + I3R3 = 0

Answer 1

Summary: kinetic energy of electron is given as product of charge of electron and the potential difference.

I applied Kirchhoff's loop rule to calculate the internal resistance of battery.