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When the separation between two charges is made four times, the force between them...
When the separation between two charges is made four times, the force between them
(a) increases four times (b) decreases four times (c) increases sixteen times (d) decreases sixteen times
Apr 9, 2018
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Two waves of the same frequency have opposite phase when the phase angle between them is?
While Lilo was playing with a toy tractor, she rolled it over an ink drop. The image on the right shows the ink drop and the marks on the floor left by tractor’s wheels. The diameter of the back wheel of the tractor is 1.5 times that of its front wheel. What is the number of revolutions made by the front wheel between the ink drop and the last mark?
State the four methods of laying of cable. State precautions while laying of underground cable in the situation : (i) Minimum clearance between cable and water pipe line when running in parallel. (ii) Minimum clearance between cable and water pipe line when running in parallel. (iii) If cable is laid through pipe what should be diameter of pipe. (iv) When more than one cable is to be laid in the same trench, what should be minimum spacing between two cables ?
Can the electric field between two positive charges be zero?
Two copper conductors have equal length. The cross-sectional area of one conductor is four times that of the other...
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