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Calculate the current needed in a 240 mm length of conductor of a d.c. motor when the conductor is situated at right-angles to the magnetic field of flux density 1.25T, if a force of 1.20N is to be exerted on the conductor.
A conductor carries a current of 70A at right-angles to a magnetic field having a flux density of 1.5T. If the length of the conductor in the field is 200mm measure the force acting on the conductor.
What is the force when the conductor and ?eld are at an angle of 450?
Why we are showing work done over a closed path is zero to prove that electrostatic forces are conservative
Ceramics are materials made by higher temperature firing treatment of natural clay and certain inorganic matters. Structurally ceramics are crystal bonded together. Other materials
Derive the mathematical relation connecting n,u,v and R for refraction at a spherical surface concave towards a point object in a denser medium.
Evaluate the volume of the bubble A diver releases an air bubble of volume 2.7cm 3 from a depth of 17 below the surface of a lake, where the temperature is 8.0°C. What is the v
why is friction a necessary evil?
determine the neutral point in a system of two unlike charges seperated by a distance
Gravitational field can also be shown by lines of force. This is same in several ways as that of electric lines of forces. With one dissimilarity, electric charges are negative and
why metallic frame used in searles apparatus
the center of oscillation of a meter stick suspended about a transverse axis is located at 10 cm mark. determine at what other positions the meter stick could be suspended and have
Q. Why does the sky appear blue in colour? As-per to the Rayleigh's scattering law the shorter wavelengths are scattered much more than the longer wavelengths. The blue look o
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