Physics. 5D-generators, motors, Fields and Forces
Quiz by Sherry Felux-Bell
High School
Physics (2017)
Texas Essential Knowledge and Skills (TEKS)
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9 questions
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- Q1A long, straight wire carries an electrical current. Which of the following is the BEST description regarding the magnetic field created by the current?The magnetic field is in straight lines opposite of the direction of the current.The magnetic field circles the wire forming a loop which can be determined using the right hand rule.The magnetic field is weak, but parallel to the wire in the direction of the current.120s112.39.c.5.d
- Q2In which of the following situations will a charged particle experience a force being caused by interacting with magnetic fields?A north pole of a magnet near a charged particle at restIf A charged particle is moving through magnetic field lines in a perpendicular direction compared to the field lines.A charged particle moving parallel to magnetic field lines120s112.39.c.5.d
- Q3Which of the following best describes all magnets found in nature?They are made of nickelThey are made of iron.They have only one pole.They have two poles.120s112.39.c.5.d
- Q4Which of the following statements describes how a generator functions?A generator uses physical work to rotate magnets, thereby inducing an electrical current.A generator stores electrical energy and discharges it when prompted.A generator changes the voltage of a circuit by changing the magnetic flux.A generator uses electrical energy to generate a magnetic field that causes physical work.120s112.39.c.5.d
- Q5Which of the following compasses will be most influenced by the bar magnet?Compass BCompass DCompass ACompass C120s112.39.c.5.d
- Q6Which of the statements below BEST describes how a motor operates?A motor works by rotating a magnet in order to GENERATE electricity.A motor works by using electrical energy to move a charge through a loop that is placed inside a magnetic field, therefore causing the loop to rotate.A motor works by changing the magnetic flux to change the voltage of a circuit.A motor works by using physical, mechanical work to push a charge through a loop, generating a uniform magnetic field.120s112.39.c.5.d
- Q7Which set of objects from the table below could be used together to create a magnet?A, B, and FA, C, and FA, C, D, and EA, B, and D120s112.39.c.5.d
- Q8A circular loop with 50 turns of wire rotates within a magnetic field. The current created by the generator can be increased by doing which of the following?Reducing the area of the loops of wireDecreasing the rate at which the loops rotate in the magnetic fieldSwitching out the magnet for one with a smaller magnetic fieldIncreasing the number of loops of wire in the generator, and by doing so, will have more wire to induce a current through the magnetic field.120s112.39.c.5.d
- Q9A NEGATIVE charge has a velocity that is moving toward the top of this page. It experiences a magnetic force in the direction to the right. Determine what direction the magnetic field lines are flowing using your RIGHT HAND RULES. (Right Thumb = velocity direction, Right Palm is for positive charge forces, Back of your right hand is for Negatively charged forces, and your right fingers are the magnetic field lines direction .)toward the bottom of the pageout of the pagetoward the top of the pageinto the page120s112.39.c.5.d
