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Create and set up a CBT environment with your preferred subjects.
Practice JAMB CBT with real UTME past questions in CBT format.
CB-WASSCE styled past question practice.
SSCE & GCE styled past question practice.
In the diagram above , the current I is
If ray travelling in air is incident on a transparent medium as shown in the diagram, the refractive index of the medium is given as
The diagram above is a block and tackle pulley system in which an effort of 80N is use to lift a load of 240N. The efficiency of the machine is
In the diagram above, which of the simple pendula will resonate with P when set into oscillation
A capacitor of 20 x 10\(^{-12}\)F and an inductor are joined in series. The value of the inductance that will give the circuit a resonance frequency of 200 kHz is
Energy losses through eddy currents are reduced by using
A transistor function mainly as a
The force on a current carrying conductor in a magnetic field is greatest when the
At reasonance, the phase angle in an a.c. circuit is
The process of energy production in the sun is
Which of the following metals will provide the greatest shield against ionizing radiation
The primary coil of a transformer has N turns and is connected to a 120 V a.c. power line. If the secondary coils has 1 000 turns and a terminal voltage of 1 200 volts, what is the value of N?
The current through a resistor in an a.c circuit is given as 2 sin wt. Determine the d.c. equivalent of the current
I. Low pressure.
II. High pressure.
III. High p.d.
IV. Low p.d.
Which combination of the above is true of the conduction of electricity through gases?
A cell can supply current of 0.4 A and 0.2 A through a 4.0Ω and 10.0Ω resistors respectively.
This internal resistance of the cell is
The ratio of electrostatic force F\(_E\) to gravitational force F\(_G\) between two protons each of charge e and mass m, at a distance d is
when a piece of rectangular glass block is inserted between two parallel capacitor,at constant plate area and distance of separation, the capacitance of the capacitor will