SPRING SEMESTER 2023-2024 PHYS 1422 Chapter 4-5 Assignment 3 Student Name: ID: 1. Calculating Current: If a light bulb has a resistance of 240 ohms and is connected to a 120- volt power source. 2. Determining Voltage: For a toaster that draws a current of 5 amperes and has a resistance of 10 ohms. 3. Finding Resistance: If a hairdryer operates at 220 volts and draws a current of 11 amperes. 4. In a series circuit with a 12-volt battery, if there are two resistors of 4 ohms and 6 ohms6 ohms, what is the current flowing through the circuit? Dr. Tahani AlbogamiSPRING SEMESTER 2023-2024 PHYS 1422 Chapter 4-5 5. Calculate the total resistance in a parallel circuit with two resistors of 5 ohms and 10 ohms. If a voltage of 12-volts is applied across the circuit, what is the total current flowing through the circuit? 6. Adevice using 18 watts of power is connected to a 9-volt battery. Calculate the current drawn by the device and determine the resistance of the device. 7. A straight stiff wire of length 1.00 m and mass 25 g is suspended in a magnetic field B=0.75T. How much current must flow in the wire so that the wire is suspended with no tension in the springs? Dr. Tahani Albogami SPRING SEMESTER 2023-2024 PHYS 1422 Chapter 4-5 8. Find the magnitude of the force per meter exerted on a straight wire carrying a current of 3.5A through a magnetic field of 0.85T when: (a) it is placed perpendicular to the B. (b) it makes an angle of 370 with the field. 9. A proton moves with a speed of 2x10m/s at an angle of 30 with the direction of a magnetic field of 0.2 T in the negative y-direction. (a) What is the magnitude and direction of the magnetic force on the proton? 10. An electron experiences a force of 3.5x1071N when moving at an angle of 37 with the direction of a magnetic field of 2.5x107T. How fast was the electron? Dr. Tahani Albogami SPRING SEMESTER 2023-2024 PHYS 1422 Chapter 4 -5 11. An electron undergoes the greatest force of magnitude 3.2x10713N, vertically upward, when it travels northward at a speed of 5x10m/s in a uniform magnetic field of unknown strength. What is the magnitude of the magnetic field? 12. A proton traveling with a speed of 2.4x10m/s through a uniform magnetic field of strength 2.5T experiences a force of magnitude 4.8x10713N. At what angle does the electron enter the field? 13. A square loop of side 3 cm is positioned in a uniform magnetic field of magnitude 0.5 T so that the plane of the loop makes an angle of 60 with the magnetic field. Find the flux passing through the square loop. Dr. Tahani Albogami