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The temperature co-efficient of resistance: The temperature co-efficient of resistance is defined as; The Fractional change in resistance from 0ºC, per degree temp
A rectangular surface (0.14 m x 0.39 m) is oriented in a uniform electric field of 440 N/C. What is the maximum possible electric flux through the surface?
A straight vertical wire passes by a wooden table top. The wire carries an upward directed current. Evaluate the path of the magnetic field of the wire at a point on the table top
Making a shadow stick In an open space on the school ground drive a 130 cm stick into the ground and let the children stay a record of the length of the shadow, calculated two
Faraday's second law of electrolysis: The charge Q needed to deposit or liberate a mass m is proportional to the charge z of the mass, the ion and inversely proportional to th
Reducing friction by an air stream Cut out a disc of cardboard about 10 cm in diameter. With a red-hot pin, burn a hole by the centre. Saw a small cotton reel in half and glue
Which of the subsequent is a principal ray for the case of an actual physical object and a convex (converging) lens? Indicate all that apply. Ans: In the thin lens approxi
A galvanometer with a coil of resistance 120 ohm shows full scale deflection for a current of 2.5 mA. How will you change the galvanometer into an ammeter of range 0 to 7.5 A? Veri
Copper constantan is used for measuring temperature up to (A) 1400 o C (B) 800 o C. (C) 1100 o C. (D) 400 o C. Ans: Copper constantan is used for meas
What is a hypothesis for a Hooke''s Law experiment which was completed with a single, series and parallel spring arrangement?
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