Maths-
General
Easy
Question
The side of an equilateral triangle is 
units and is increasing at the rate of 
. The rate of increase of its area is
- None of these
The correct answer is:
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The function 
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A conducting circular loop is placed in a uniform magnetic field 
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198.The transformation ratio in the step-up transformer is
198.The transformation ratio in the step-up transformer is
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Two coils 
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The magnetic flux across a loop of resistance 
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A conducting square loop of side L and resistance R moves in its plane with a uniform velocity v perpendicular to one of its sides. A magnetic induction B constant in time and space, pointing perpendicular and into the plane of the loop exists everywhere with part of the loop outside the field, as shown in figure. The induced emf is
A conducting square loop of side L and resistance R moves in its plane with a uniform velocity v perpendicular to one of its sides. A magnetic induction B constant in time and space, pointing perpendicular and into the plane of the loop exists everywhere with part of the loop outside the field, as shown in figure. The induced emf is
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At a place the value of horizontal component of the earth’s magnetic field 
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At a place the value of horizontal component of the earth’s magnetic field is . A metallic rod of length placed in east-west direction, having the end towards east, falls vertically downward with a constant velocity of . Which end of the rod becomes positively charged and what is the value of induced potential difference between the two ends
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A rectangular, a square, a circular and an elliptical loop, all in the 
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The armature of dc motor has 
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The oscillating frequency of a cyclotron is 10 MHz. If the radius of its dees is 0.5 m, the kinetic energy of a proton, which is accelerated by the cyclotron is
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The flux linked with circuit is given by
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For the curve 
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Maths-General
