charged droplet travels at a speed of 2.0 x 103 m/s. The field(s) that acts on this droplet is/are a. electrical only b. electrical and magnetic only c. magnetic and gravitational only d. electrical‚ magnetic‚ and gravitational 3. A charged particle experience a magnetic force only when it a. moves in the same direction as the magnetic field b. crosses magnetic field lines c. goes against gravity d. moves against an electric field 4. A proton beam travels at a constant velocity
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it with the calculated value. Secondly the goal was to investigate the relationship between the emf and the frequency of the driving signal. The magnetic field was found to be uniform throughout. For the frequency of 40 Hz‚ the average current was found to be 0.634‚ the experimental magnetic field was found to be 29.21 Gauss while the average magnetic field calculated from the max and minimum values was 31.25 Gauss giving a percent error of 6.53%. V emf was calculated to be 0.03177V and the average
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2.1 Motors use the effect of forces on current-carrying conductors in magnetic fields 2.1.1 The motor effect The motor effect is where a force acts on a current-carrying conductor in a magnetic field. The right hand palm rule is used to find certain properties: fingers point to magnetic field‚ thumb points in DC direction and palm points to direction of the force. 2.1.2 Factors affecting the force acting on the current-carrying conductor Forces are experienced by the electrons in the conductor
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P=(E)(E)/R 6. A magnetic blow out coil in a DC motor controller contactor functions to: Ans: Prevent contact melting 7. The device most commonly utilizing the principle of electromagnetic induction is: Ans: Transformer 8. A current at which a magnetic-type overload relay tends to trip may be decrease by raising the plunger further into the magnetic circuit of the relay.This action will: Ans: Increases magnetic pull on the plunger and
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Materials Science Version No. 2.0 Course Prerequisites/ Corequisites/ antirequisites : L T P C 3024 Objectives: To enable the students to understand the nature of different types of materials namely Conducting‚ Semi conducting‚ Dielectrics‚ Magnetic and Superconducting materials. Expected Outcome: This course will be the base to understand the various concepts involved in the applications of materials in Engineering and Technology. Unit 1 Conducting material 10 hours (Description)
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Required Vocabulary – IB 12 Higher Level Physics and Physical Measurement 1. Fundamental Units – seven basic units of the SI measurement system: kilogram‚ second‚ mole‚ meter‚ ampere‚ Kelvin‚ candela. 2. Derived Units – units that are combinations of fundamental units. These combinations may or may not have a separate name. (eg. 1 kg m/s2 = 1 N) 3. Accuracy - An indication of how close a measurement is to the accepted value (a measure of correctness). 4. Precision - An indication
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------------------------------------------------- Magnetism From Wikipedia‚ the free encyclopedia This article is about magnetic materials. For information about objects and devices that produce a magnetic field‚ see magnet. For fields that magnets and currents produce‚ see magnetic field. For other uses of "Magnetism"‚ see Magnetism (disambiguation). Magnetic leads here. For other uses of magnetic‚ see Magnetic (disambiguation) A magnetic quadrupole Electromagnetism | | * Electricity * Magnetism | Electrostatics[show]
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Describe the main features of a DC electric motor and the role of each feature Part | Description | Role | Magnet(s) | Either permanent or electromagnetic. Induce a magnetic field and fit around the armature. | The magnets supply the magnetic field which interacts with the current in the armature to produce the motor effect. | Armature | The armature consists of a cylinder of laminated iron mounted on an axle. Often there are longitudinal grooves into which the coils are wound. | The armature
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Basics of Magnetism by Ron Kurtus (revised 29 January 2013) Magnetism is a force of attraction or replusion that acts at a distance. It is due to a magnetic field‚ which is caused by moving electrically charged particles. It is also inherent in magnetic objects such as a magnet. A magnet is an object that exhibits a strong magnetic field and will attract materials like iron to it. Magnets have two poles‚ called the north (N) and south (S) poles. Two magnets will be attacted by their opposite poles
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reading of the galvanometer remains the same with switch S open or closed‚ then what is the value of current through galvanometer ? 1 di es IP IR P w .s to V B Q HS w A da y D C G D w R 6. 7. 8. 9. How will the magnetic field intensity at the centre of a circular coil carrying current change‚ if the current through the coil is doubled and the radius of the coil is halved ? 1 Define eddy current. What is the ratio of speed of gamma rays and radiowaves in vacuum ? Prove
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