Questions Asked

woleraymond:
A toroid with 1500 turns is wound on an iron ring 360mm^2 in cross section area of 0.75m mean circumference and of 1500 relative permeabilit…
 updated one year ago
 1 reply
 No Medals Yet

woleraymond:
A flashlamp bulb is marked 2.5V, 0.3A and has to be operated from a dry battery of emf 3.0V for the current pd of 2.5V to be produced across…
 updated one year ago
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woleraymond:
A flashlamp bulb is marked 2.5V, 0.3A and has to be operated from a dry battery of emf 3.0V for the current pd of 2.5V to be produced across…
 updated one year ago
 1 reply
 1 Medal

woleraymond:
A 200W lamp is totally immersed in 1500gm of water.How much will the temperature of the water rise in 3mins?Neglect heat losses from the wat…
 updated one year ago
 2 replies
 1 Medal

woleraymond:
Calculate the electrochemical equivalent of hydrogen, given that 1A deposits 0.65gm of copper from a solution of copper sulphate in 33mins…
 updated one year ago
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woleraymond:
Calculate the electrochemical equivalent of hydrogen, given that 1A deposits 0.65gm of copper from a solution of copper sulphate in 33mins…
 updated one year ago
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woleraymond:
An electron is moving horizontally to the right at a speed or 4 x 10^6ms^1. It enters a region of length 20cm in which there
is an electic…
 updated one year ago
 8 replies
 No Medals Yet

woleraymond:
What is the magnetic flux density midway between two long parallel wires separated by 10 cm each carrying a current of 5A.
a  In the sam…
 updated one year ago
 2 replies
 1 Medal

woleraymond:
A current of 5A is carried by a straight wire in a uniform flux density of 2 x 10^3T. Calculate the force per unit length on the wire if it…
 updated one year ago
 1 reply
 1 Medal

woleraymond:
If u and v are noncollinear vectors and
P = (x + 4y) u + (2x + y +1)v
Q =(y  2x + 2)u + (2x  3y 1)v
…
 updated one year ago
 2 replies
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woleraymond:
A twometer potentiometer wire is used in an experiment to determine the internal resistance of a Voltaic cell. The emf of the cell is balan…
 updated one year ago
 1 reply
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woleraymond:
Two resistance coils, P and Q are placed in the gaps of a meter bridge A balance point is found when the movable contact touches the bridge …
 updated one year ago
 4 replies
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woleraymond:
find the area bounded by y = 1 + x the x axis and the curve y = x(x4)
 updated one year ago
 10 replies
 1 Medal

woleraymond:
A curve passes through the origin of coordinates and its gradient is 2x  x^2/3 at the point whose abscissa is x .Find the ordinate of the …
 updated one year ago
 9 replies
 1 Medal

woleraymond:
A television set shoots out a beam of electrons. The beam current is 10uA.How many electrons strike the TV screen each second? How much char…
 updated one year ago
 1 reply
 1 Medal

woleraymond:
A convex lens with focal length 15cm is placed 45cm away from the object 2.5 cm tall.
a  Determine the position and the size of the ima…
 updated one year ago
 3 replies
 No Medals Yet

woleraymond:
In figure below if a charge of 4uc flows from the 6V battery to plate P of the 1 uF capacitor. what charge flow from
a  Q to R
…
 updated one year ago
 6 replies
 1 Medal

woleraymond:
The capacitance of a variable radio capacitor can be changed from 50PF to 95PF by turning the dial from 0 to 180 degrees. With the dial se…
 updated one year ago
 13 replies
 3 Medals

woleraymond:
calculate the potential difference between the plates of a parallel plate capacitor so that the gravitational force on a proton would be bal…
 updated one year ago
 1 reply
 1 Medal

woleraymond:
Two charges +4e and +2e are fixed at points (0,0)cm and (0,40)cm on the x axis. A third charge e is placed on the straight line joining the …
 updated one year ago
 28 replies
 1 Medal

woleraymond:
A tiny ball of mass 0.6g is suspended from a rigid support with a piece of thread in a horizontal electric field of intensity 700N/C. The b…
 updated one year ago
 6 replies
 2 Medals

woleraymond:
derive an expression for the work done in putting the four charges together as shown below
 updated one year ago
 101 replies
 2 Medals

woleraymond:
A small tropical fish is at the center of a spherical fish bowl 1m in diameter. Determine the position and the lateral magnification of the …
 updated one year ago
 36 replies
 1 Medal

woleraymond:
An infinite charged sheet has a surface charge density of 1 x 10^7 Cm^2 .How far apart are the equipotential surfaces whose potentials dif…
 updated one year ago
 10 replies
 2 Medals

woleraymond:
Find the potential at two points A and B at distances 10cm and 50cm from a charge of 2uc in the figure attached. Also find the work needed t…
 updated one year ago
 3 replies
 1 Medal

woleraymond:
Prove that the vectors u = 3i + j  2k , v = i + 3j+ 4k and w = 4i  2j  6k can form the sides of a triangle
 updated one year ago
 4 replies
 1 Medal

woleraymond:
Find the electric potential at point A and B due to two small sphere X and Y 1.0m apart in air and carrying charges of +2.0 x 10^8 C 2.0 x…
 updated one year ago
 4 replies
 1 Medal

woleraymond:
A body hangs from a spring balance supported from the roof of an elevator. if the elevator has an upward acceleration of 3m/s^2 and the bala…
 updated one year ago
 18 replies
 3 Medals

woleraymond:
a 150kg ladder leans against a smooth wall,making an angle 30 degrees with the floor.The center of gravity of the ladder is one third the wa…
 updated one year ago
 19 replies
 1 Medal

woleraymond:
A rope suspended from a ceiling supports an object of weight W at its opposite
end .Another rope tied to the first at the middle is pulled …
 updated one year ago
 3 replies
 No Medals Yet
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