Electricity and Magnetic Fundamentals

51. Defined as a closed path in which magnetic induction or flux flows

1. Electric circuit
2. Magnetic circuit
3. Electronic circuit
4. Electromagnetic circuit

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52. Defined as the flux density produced in it due to its own induced magnetism

1. Magnetic field intensity
2. Electric field intensity
3. Electromagnetic field intensity
4. Intensity magnetization

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53. Defined as the number of lines per unit area through any substance in a plane at right angles to the lines of force

1. Flux
2. Flux lines
3. Flux density
4. Flux intensity

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54. Defined as the ratio of the volume occupied by the atoms or ions in a unit cell divided by the volume of the unit cell and is used to measure the compactness of a crystal.

1. Atomic packing factor (APF)
2. Ionic Packing Ratio (IPR)
3. Atomic compacting factor (ACF)
4. Ionic compacting ratio (ICR)

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55. Electric field intensity at a point due to a given charge _________ if the relative permittivity of the medium decreases.

1. decreases
2. remains unchanged
3. increases
4. becomes zero

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56. Electric field intensity at a point is numerically equal to _________ at that point.

1. potential gradient
2. potential difference
3. dielectric constant
4. the force

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57. Electric field intensity is a _________ .

1. scalar
2. phasor
3. vector
4. variable

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58. Electric field intensity is measured in

1. volts/meter
2. Newton/meter
3. Newton-meter
4. Amperes/meter

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59. Electric lines of force leave or enter the charge surface at an angle of

1. 30°
2. 45°
3. O°
4. depending upon the angle of launch and entry

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60. Electric potential is a _________ quantity.

1. scalar
2. phasor
3. vector
4. variable

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