Faraday’s laws of electromagnetic induction-Magnitude of induced e.m.f. Whenever the magnetic flux linked with a closed circuit changes, an e.m.f. is induced in the circuit. The induced e.m.f. lasts so long as the change in flux lasts. The magnitude of the induced e.m.f. is directly proportional to rate of change of flux linkage or rate Read more about Laws of Electromagnetic Induction[…]
Puzzle 1: A girl is sitting in a house at night that has no lights on at all. There is no lamp, no candle, nothing. Yet she is reading. How? Puzzle 2: You walk into a room with a match, a kerosene lamp, a candle, and a fireplace. Which do you light first? Puzzle 3: Read more about Puzzles 1[…]
Riddle – 1: What is something that cannot be beaten and is always one step ahead, and without, one could not be beaten or ever be dead? Answer: The FUTURE! Riddle – 2: If it’s information you seek, come and see me. If its pairs of letters you need, I have consecutively three. Hint – 1: Who Read more about Riddles 9 [With Answers][…]
Radical axis: The radical axis of two circles is the locus of a point which moves in such a way that length of the tangent drawn from it to the two circles are equal. The radical axis of circles S₁ = 0 and S₂ = 0 is given by S₁ – S₂ = 0. Properties Read more about Radical Axis of Two Circles and it’s Properties[…]
Riddle – 1: What is something that cannot be beaten and is always one step ahead, and without, one could not be beaten or ever be dead? Riddle – 2: If it’s information you seek, come and see me. If its pairs of letters you need, I have consecutively three. Hint – 1: Who might keep information Read more about Riddles 9[…]
Oxides of nitrogen range from N2O (oxidation state of nitrogen +1) through NO, N2O3, NO2, N2O4, N2O5 in which the oxidation state of nitrogen is +5 1. NO2– Nitrogen dioxide: ⇒ NO2 is an intermediate in the industrial synthesis of nitric acid. ⇒ This reddish – brown toxic gas has a characteristic sharp, biting odor and is a prominent air pollutant. It absorbs light and leads to the yellow-brown Read more about Oxides of nitrogen[…]
Kirchhoff’s Voltage Law: Kirchhoff’s voltage law states that the algebraic sum of all branch voltages around any closed loop of a network is zero at all instants of time. It is a consequence of the law of conservation of energy. Voltage being the energy (or work) per unit charge. A simple resistive network with voltage Read more about Kirchhoff’s Laws[…]
Puzzle 1: How many times do the hands of a clock coincide in a day? A.) 20 B.) 21 C.) 22 D.) 24 Answer: Option ‘C’ Explanation: The hands of a clock coincide 11 times in every 12 hours (Since between 11 and 1, they coincide only once, i.e. at 12 o’clock). ==> The hands Read more about Clock Puzzle 5 [With Answers][…]
Puzzle 1: How many times do the hands of a clock coincide in a day? A) 20 B) 21 C) 22 D) 24 Puzzle 2: How many times are the hands of a clock at right angles in a day? A) 22 Read more about Clock Puzzle 5[…]
Angle of intersection of Two Circles: The angle of intersection of two circles is defined as the angle between the tangents to the two circles at their point of intersection. Let, x² + y² + 2g₁x + 2f₁y + c₁ = 0 x² + y² + 2g₂x + 2f₂y + c₂ = 0. . Orthogonal Read more about Angle between Two Intersecting Circles[…]