| 1. | Which one of the following is a passive element to an electrical circuit ? | |
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Current source
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Voltage source
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Resistor
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Battery
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Report Question| 2. | Which one of the following is the mathematical expression of Ohms law ? | |
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V = I
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V = R /1
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V = I - R
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V = IR
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| 3. | Determine the current (in A) that flows through a 15 ohms resistance, when the potential difference between the terminals of the resistor is 60 V ? | |
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3
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4
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2
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6
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| 4. | Determine the power (in W) dissipated by a 16 ohms resistor, when the potential difference between the ends of the resistor is 32 V ? | |
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66
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68
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62
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64
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| 5. | Which one of the following is the S.I. unit of magnetic field strength ? | |
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Weber
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Tesla
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Ampere-meter
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Ampere/meter
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| 6. | If the magnetic susceptibility of any material is less than zero then the material is ? | |
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paramagnetic
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ferromagnetic
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diamagnetic
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ferrimagnetic
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| 7. | Determine the reluctance (in Amp-turns/Wb) of a coil, when the flux through the coil is 15 Wb and the produced mmf is 30 Amp-turns ? | |
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4
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2
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1
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3
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| 8. | Determine the value of produced mmf (in Amp-turns) in a coil, if the coil has 120 turns and carrying a current of 0.1 A ? | |
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12
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14
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16
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18
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| 9. | What will be the magnetic field strength (in A/m) of a material when the intensity of magnetization of the material is 0.064 Amp/m and the magnetic susceptibility of the material is 0.52*10^4 ? | |
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1240
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1265
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1260
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1230
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| 10. | Determine the magnitude of EMF (in V) induced between the axis of rotation and the rim of the disc, when the disc of radius 10 cm rotates with an angular velocity of 60 revolutions per second and placed in a magnetic field of 3 T acting parallel to the rotation of the disc ? | |
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6.69
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4.64
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6.67
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5.65
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