Write your answers as T or F on the answer page in the appropriate blank. Any an
ID: 1607202 • Letter: W
Question
Write your answers as T or F on the answer page in the appropriate blank. Any answers NOT recorded on the answer sheet will NOT be counted. Like magnetic poles repel each other and opposite magnetic attract poles each other True or False The magnetic pole in the northern hemisphere of the Earth is a "South" magnetic pole. True or False A charge particle that has a velocity in a direction that is parallel to a magnetic field will no net magnetic force. True or False The existence of magnetic monopoles was verified experimentally by James Clark Maxwell. True or False "An induced emf gives rise to a current whose magnetic field opposes the change in magnetic produced it" is a statement of Faraday's Law. True or False A transformer that steps up the voltage also steps up the current. True or False In a ac generator, a method must be employed in which the direction of the current through loops is reversed each half revolution of the motor. True or False The strength of the magnetic field through a solenoid can be determined from B = mu_o nI. True or FalseExplanation / Answer
1. True, opposite poles attract and same poles repel
2.False, The North Magnetic Pole is the point on the surface of Earth's Northern Hemisphere at which the planet's magnetic field points vertically downwards
3.True, As Force is a cross product of velocity and magnetic field, so in same direction theta=0.
4.False. Maxwell countered the result.
5.True, above written statement was given by faraday.
6.False, as Voltage steps up current steps down. As Product of V and I is same for the primary and secondary transformer.
7.True, After every half revolution, each side of the generator coil starts moving in the opposite direction in the magnetic field. The side of the coil which was initially moving downwards in a magnetic field, after a half revolution, it starts moving in opposite direction – upwards.
8.True
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