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ENTRANCE TEST – 2016 Multiple Questions and Answers.
| 26. | If the length, width and separation between the plates of a parallel plate capacitor is doubled then its capacitance becomes | ||
| A. | Double | ||
| B. | Half | ||
| C. | Four-times | ||
| D. | Eight-times | ||
| 27. | Resistance between two opposite faces of square thin film of area 1 mm2 having thickness of 1 μm if resistivity of material is 10-6 Ω will be: | ||
| A. | 1000 Ω | ||
| B. | 100 Ω | ||
| C. | 1 Ω | ||
| D. | 10 Ω | ||
| 28. | ‘F’ is maximum force acting on a conductor. Now if we change the direction of conductor by making an angle of 45° with the magnetic field then the force becomes: | ||
| A. | F /2 | ||
| B. | 2F | ||
| C. | √2 | ||
| D. | √2 F | ||
| 29. | If we doubled all the parameters of the force acting on current carrying conductor and θ = 90° then magnetic force becomes: | ||
| A. | Half | ||
| B. | Double | ||
| C. | Eight-times | ||
| D. | Four-times | ||
| 30. | The force acting on current carrying conductor will be maximum if the angle between magnetic field and conductor is: | ||
| A. | 0° | ||
| B. | 30° | ||
| C. | 90° | ||
| D. | 60° | ||
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