2014
A transformer has 400 turns of wire in the primary coil and 40 turns in the secondary col. If the input voltage is 150 volts. Calculate the magnitude of the output voltage
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2014 WAEC SSCE Physics Past Questions
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2014
A wire of length 100 cm has a resistance of 10\(\Omega\). If its cross-sectional area is 0.005cm2, determine its resistivity
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2014
In the circuit diagram above, E is a battery of negligible internal resistance. If its emf is 9.0V. Calculate the current in the circuit.
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2014
Two identical charges situated 20cm apart in vacuum repel each other with a force of 1.0N.Calculate the value of each other with a force of 1.0N. Calculate the value of each charge. [(14 \(\pi \varepsilon_o)^{-1}\) = 9 x…
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2014
An element of nucleon number P and atomic number Q emits an alpha particle from its nucleus. The resultant numbers of the new element formed are respectively
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2014
An aluminum foil is placed across a beam of radiation from a radioactive source. Which of the following types of radiation will be stopped by it?
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2014
Which of the following statements is the major advantage of nuclear fusion over nuclear fission?
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2014
The energy required to separate the nucleus in an atom completely is known as
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2014
You are provided with a potentiometer AB, a 102\(\Omega\) standard resistor R, a battery of emf 4.5V, a jockey J, and other necessary materials.Connect a circuit as shown in the diagram above.Close key K. Without J makin…
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2014
In the actual exam, a setup will be provided, including an illuminated object, a converging lens, a screen, a meter rule, and other necessary materials. The experiment involves measuring the size of the illuminated objec…
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2014
In an actual practical exam, a setup will be provided for an experiment involving a grooved inclined plane, a solid sphere, a stopwatch, and other necessary apparatus. The sphere is released from various distances D from…
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2014
(a) Write Einstein's photoelectric equation and identh: each component of the equation.(b) For a photocell, star; one factor each that is responsible fo: the:(i) emission (ii) rate of emission;(iii) energy of photoelect…
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2014
(a) Define electromotive force.(b) State:(i) the principle of operation of a potentiometer,(ii) two advantages that a potentiometer has over a voltmeter in measuring potential difference.(c)(i) Sketch and label a diagram…
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2014
(a) State the three characteristics of sound and the factor on which each of them depends.(b) Explain resonance as applied to sound.(c) What role does echo play in the construction of a concert hall?(d) The surface of an…
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2014
a) Define heat capacity and state its unit.(b) List two effects of heat on a substance.(c) Explain how a tightly fitted glass stopper could be removed from a reagent bottle.(d) A quantity of pepper soup of mass 800 g pou…
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2014
(a) Give two examples each of:(i) rotational motion;(ii) linear motion.(b) Describe a laboratory experiment to determine the density of an irregularly shaped solid.(c) State Newton's second law of motion(d) Explain the t…
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2014
(a) State two conditions under which photo-electrons can be emitted from the surface of a metal.(b) List two particle characteristics of electromagnetic waves.
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2014
The diagram above represents the graph of electron energy against the frequency of the radiation incident on a metal surface. Interpret the: (a) slope of the graph; (b) intercept, OC; (c) intercept, OK.
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2014
(a) Explain how a gas can be made to conduct electricity.(b) Name the electric charge carriers in gases.
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2014
A metallic bar 50 cm long has a uniform cross-sectional area of 4.0 cm\(^2\). If a tensile force of 35 kN produces an extension of 0.25 mm, calculate the value of Young's modulus
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