Pls help me answer the following questions

Gauge Directions: Read carefully each item. Write only the letter of the best answer before the number. 1. How is magnetism produced? A. An excess of north monopoles B. An excess of south monopoles C. Moving charges D. Separation of positive and negative charges 2. In calculating for the magnetic field, what is the SI unit being used? A. newton B. coulomb C. gauss D. tesla 3. What do you call the measure of the number of magnetic field lines passing through an area? A. electric flux B. magnetic flux C. both A and B D. none of these 4. It is the combination of the magnetic and electric force on a point charge due to electromagnetic fields. It is used in electromagnetism and is also known as the electromagnetic force. What force is this? A. Gravitational force B. Gaussian force C. Lorentz force D. Frictional force 5. The north pole of a suspended or floating bar magnet currently points directly toward the earth's A. north magnetic pole B. north geographic pole C. south magnetic pole D. south geographic pole 6. What can you make visible by sprinkling iron filings around a magnet? A. the areas called domains B. the magnetic forces C. the magnetic field lines D. the north and south poles10.Since there is a relationship between electric and magnetic field, complete the statement, "An electromagnet uses." A. a magnetic field to produce an electric current B. an electric current to produce a magnetic field C. a magnetic current to produce an electric field D. an electric field to produce a magnetic current 11. Which of the following statements best describe the difference between electric and magnetic fields? I. An electric field is essentially a force field that's created around an electrically charged particle. A magnetic field is one that's created around a permanent magnetic substance or a moving electrically charged object. II. The strength of the magnetic field is represented by either gauss or Tesla. The strength of an electric field is represented by Newton per Coulomb or Volts per Meter III. Magnetic fields are created whenever there is a flow of electric current. An electric field occurs wherever a voltage is present A. I and II B. II and III C. I, II, and III D. I and III 12. The magnetic field of Earth is 0.5 G at a certain point is space. What is the equivalent magnetic field in tesla? (Note: 1G = 10-4T) A. 5 x 10-5 T B. 5 x 10-4 T C. 50 mT D. 5 mT 13.There are several modern uses of magnets. A can have million of magnets. Each magnet points in its own direction, making a code. This allows an individual to make purchases. A. Driver's License B. Credit Card C. Cheque Book D. Television 14.A force 4.6 x 10 -14 N acts on a particle of unknown charge moving perpendicularly through a magnetic field of 9 mT. if the speed of the particle is 2x104 m/s, what is the charge of the particle? Note: FB = qv x B A. 2.56x10-19 C B. 2.56x10-16 C C. 8.28x10-12 C D. 8.28x10-9C 15.A wire of length 0.75 m carries a current of 20.0 A. The wire experiences a force of 5.8 N in the presence of a magnetic field of 0.50 T. What is the angle between the magnetic field and the wire? Note: FB = IPB sin 0 A. 470 B. 53 C. 49 D. 5107. Physicists use a hand mnemonic known as the to help remember the direction of magnetic forces. To form the mnemonic, first make an L-shape with the thumb and first two fingers of your right hand. Then, point your middle finger perpendicular to your thumb and index finger. A. Right-hand rule B. Gauss law C. Left-hand rule D. Lorentz force 8. Why does a current-carrying wire has a magnetic field around it? A. A moving charge produces a magnetic field on its own B. The current aligns the magnetic domains in the metal of the wire C. The metal was magnetic before the current was established, and the 25 current enhanced the magnetic effect D. None of the above is correct 9. Why does the earth's magnetic field is believed to originate? A. By a separation of north and south monopoles due to currents within the earth B. With electric currents that are somehow generated in the earth's core C. From a giant iron and cobalt bar magnet inside the earth D. From the process that are not understood