pls help me answer the following questions

Gauge Directions: Read carefully each item. Use a separate sheet for your answers. Write only the letter of the best answer for each test item. 1. What does Lenz devise? A rule to find out the direction of A. current induced in a circuit. B. electromagnetic difference. C. potential difference. D. flow of power in fuse. 2. In Lenz' law, what is the direction of induced current? It always. A. opposes the cause. B. remains same as that of cause. C. equal to cause that produces it. D. directs the cause. 3. If the N pole of a bar magnet is quickly thrust into the opening of the large coil that faces you, how will the galvanometer deflect while the magnet is moving into the coil? A. positive deflection B. negative deflection C. no deflection D. undetermined deflection 4. If the N pole of a bar magnet is held motionless inside the large coil, how will the galvanometer deflect? A. positive deflection B. negative deflection C. no deflection D. undetermined deflection 5. What are the two main applications for ac? A. direct, pulsating B. electric, magnetic C. power, information D. static, dynamic 6. The distance that a signal's energy can travel in the time it takes for one cycle to occur is called the signal's: A. amplitude B. frequency C. wavelength D. period11. The magnet is held stationary to the solenoid. 12. The magnet is moving toward the solenoid. 13. The magnet is moving away from the solenoid. N S N S 14-15 Find the direction of the induced current for the solenoid in the figure below, when the magnet is_. 14. moving toward the solenoid. 15. moving away from the solenoid. N S7. The current that flows through a battery-powered flashlight, solar cells and fuel cells is called: A. AC B. DC C. RC D. LC 8. If current varies periodically, from zero to a maximum, back to zero, and then repeats, the signal is: A. direct B. alternating C. pulsating D. repetitive 9. The voltage across the capacitor falls to zero as the charge is used up by the current flow. At this point, the energy stored in the coil's magnetic field. What is induced during this stage? A. Voltage B. Current C. Resistance D. Charge 15 10. If a voltage is induced it will create a current. What is the use of this current thatwas produced? begin to A. recharge the inductor B. discharge the inductor C. recharge the capacitor D. Discharge the capacitor 11-13 For the following scenarios, determine whether the magnetic flux changes or stays the same. If the flux changes: indicate whether it is increasing or decreasing (andin which direction)