1993 - WAEC Physics Past Questions and Answers - page 5
A particle of charge 5C moves perpendicularly to a magnetic Held of magnitude C.01 T. If the velocity of the charge is 1.5ms'2, calculate the magnitude of the force exerted on the particle
The function of the magnanese (IV) oxide in a leclanche cell is to
In the diagram above, three identical lamps each of 100 W are connected in parallel across a potential difference of 250 V. Calculate the reading of the ammeter.
Electrical resistance is the property of an electrical conductor that causes electrical energy to be converted into
Calculate the current, I in the diagram shown above.
(Neglect the internal resistance of the cell)
Which of the following is not a conductor of electricity?
ln the diagram below, the galvanometer indicates a null-deflection. What is the potential difference between P and Q?
When a potential difference, V is applied across the ends of a resistor of resistance, R a Current, l passes through the resistor. The heat generated in the resistor in time, t is given by the expression
Electric motor primarily converts
What amount of current would pass through a 10 Ω coil if it takes 21s for the coil to just melt a lump of ice of mass 10g at 0oC if there are no heat losses? (Latent heat of fusion of ice = 336 Jg\(^{-1}\)).