pls help me answer the following questions

7. Which of the following statements can describe the process of the law of induction? A. Increase in the number of coils decreases the magnetic flux B. Increase in the number of turns in the coil increases the induced emf C. Decrease in magnetic field decreases the induced current D. Decrease in the speed of relative motion between coil and magnet will result in increased flux 8. The minus sign in Faraday's law of induction is very important. The minus means that the EMF creates a current I and magnetic field B that oppose the change in flux Ad this is known as_ A. Ampere's Law B. Lenz' law C. Magnetic flux density D. Induced electric field 17 9. What would be the implication if your curled fingers have the same direction with the induced current or emf in the circuit? A. Positive I and EMF B. No implication was given C. Negative I and EMF D. Both A and B 10. Based on the following statements, which is incorrect about the sign of the induced emf or current? I. If the flux is increasing, so do is positive, then the induced emf or current is negative II. If the flux is decreasing, doB is negative and the induced emf or dt current is positive III. If the flux is increasing, doB is negative and the induced emf orI. If the flux is increasing, so dog is positive, then the induced emf or current is negative II. If the flux is decreasing, dog is negative and the induced emf or dt current is positive III. If the flux is increasing, doB is negative and the induced emf or dt current is negatives A. I B. II C. III D. I and II 11.Which of the following is a nonconservative field where it does net work in moving a charge over a closed path? A. Magnetic field B. Electrostatic electric field C. Induced emf D. Induced Electric field 12. The fact that emfs are induced in circuits implies that work is being done on the conduction electrons in the wires. What can possibly be the source of this work? A. Electric flux B. Faraday's law C. Magnetic flux D. Lenz's Law For numbers 13-14. A circular coil 50 cm in diameter (2) BA (b) By is rotating in a magnetic field directed upward with a magnitude of 65 mT. Calculate the magnetic flux through the coil at the positions shown below. 13. (a) A. 10.0 T.m2 B. 0.10 Wb C. 1.00 T.m2 D. -0.01 Wb 14. (b) A. 5.00 Wb B. 50.0 T-m2 C. 0.05 Wb D. 0.50 T.m2 15.A magnetic field B= 0.6T is directed upward through a circular loop of diameter 7 cm and 500 turns. The loop is initially horizontal, so it is perpendicular to the magnetic field. It rotates through a horizontal axis so that the plane of the loop is at 740 with the horizontal axis within 1 second. What is the magnitude of the induced emf? A. -15.3 V B. 17.6 V C. 16.4 V D. -18.18 VGauge Directions: Read carefully each item. Write only the letter of the best answer before the number. 1. A vector quantity which defined as the dot product of the magnetic field and the area vector. A. Electric Field B. Magnetic Flux C. Induction D. Induced EMF 2. From the definition of magnetic flux, which of the following is the SI unit for magnetic flux? A. V B. T C. Wb D. J 3. If the magnetic flux through an area bounded by a closed conducting loop changes with time, a current and an emf are produced in the loop, what do you call this process? A. Induction B. Intensity C. Current D. EMF 4. What device was used in conducting various experiments such as with magnetically induced emf by Faraday? A. Voltmeter B. Ohmmeter C. Ammeter D. Galvanometer 5. "Moving the magnet toward or away from the coil." "Moving a current carrying coil toward or away from the coil." Based from these actions, what do they have in common? A. All these actions do induce a current in a coil B. All these actions were supported by stationary motion C. All these actions are in a closed circuit D. All these actions used magnets to move the galvanometer to another place. 6. Faraday's law of induction, the induced emf is proportional to the of magnetic flux through the coil. A. Type of metal coil B. Color of the coil C. Quantity of magnets D. Rate of change