Question

4. If a current is running through a wire, which of the following will be induced around the wire? O A reverse current O A gravitational field O A magnetic field O A sound wave 5. If a proton is moving at a speed of 5 m/s to the right (→) through a uniform magnetic field that points to the left (€), which of the following describes the force the proton feels? The proton feels a force pushing it upward O The proton feels a force pushing it downward O The proton feels a force pushing it to the right O The proton feels a force pushing it to the left O The proton feels zero force 6. If a proton is moving at a speed of 5 m/s to the right (→) through a uniform magnetic field that points into the page ( direction), which of the following describes the force the proton feels? o The proton feels a force pushing it upward O The proton feels a force pushing it downward O The proton feels a force pushing it to the right O The proton feels a force pushing it to the left O The proton feels zero force 7. If you are designing a transformer for a cell phone charging cable and need to step down the voltage from the primary coil to the secondary by half, which coil should have more turns? O The primary coil should have more turns O The secondary coil should have more turns The two coils should have the same number of turns 8. From one coil of a transformer to another, which of the following quantities ALWAYS stays constant (does not change)? O Voltage O Current O Energy O Resistance 9. What type of waves are generated by changing electric and magnetic fields? O A sound wave O A thermal wave O A light wave O A frequency wave

Answer 1

4 ophun 3 - Magnetic field, a cument carrying conductor produces a magnetic field around it 5 ophon-5 The protons feels zero force as 0 = 180° F = q VB smo sm180=o que sin 180 = 0 N. Scanned with CamScanner