Two point charges q2 = 3 x 10-6C and q1 = 5 x 10-6 C are located at (3 ,5,1,) and (1,3,2) m .
find F12and F21 using vector form of coulomb 's law . Also, find their magnitude.
ABC is an equilateral triangle of side 10m and D is the mid point of BC . Charges of +100 , -100 and +75 micro C are placed at B , C and D respectively . Find the force on +1 micro C charge placed at A.
a uniform ladder of length 3.25m and weighing 250N is placed against a smooth vertical wall with its lower end 1.25m from the wall. if coefficient of friction between the ladder and the floor is 0.3 , then , find the frictional force acting on the ladder at the point of contact between ladder and floor.
Four charges are placed on corners of a square ABCD, A = Q, B = -2Q, C = +2Q & D = -Q having side of 5cm. If Q is one microcoulomb, then electric field intensity at centre will be
a) 1.02 x 107 N / C upwards
b) 2.04 x 107 N / C downwards
c) 2.04 x 107 N / C upwards
d) 1.02 x 107 N / C downwards
2 charged metal spheres of radii R and 2R teemporarily placed in contact and then seperated.At the surface of each which sphere has the greater value of tha following:a.charge b.charge density c.potential d.electric field
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