(i)
- lamps are placed in series instead of parallel
- fuse and switch is on the neutral instead of live
(ii)
- fuse is made of a wire with low m.p.
- it safeguards the appliance against damage should the current flowing through i t exceed the safe
limit.
Kavungya answered the question on May 25, 2019 at 07:14
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is 240V and the current flowing is 0.2A. Find the...(Solved)
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i) Define the term rectification.
ii) Describe how the illustrated rectifier works.
iii) State the modification that can...(Solved)
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ii) Describe how the illustrated rectifier works.
iii) State the modification that can be made on the arrangement to improve the quality of the output.
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Use...(Solved)
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Use the graph to answer the following questions,
i) Determine the threshold frequency.
ii) Find the plank's constant h. .(Take the charge of an electron to be 1.6 x 10-19 C)
iii) Calculate the work function of the metal in joules.
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What is the frequency of the pendulum?
Date posted: May 25, 2019. Answers (1)
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Date posted: May 25, 2019. Answers (1)
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Given that the critical angle for the glass is 390, sketch on the...(Solved)
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Given that the critical angle for the glass is 390, sketch on the diagram the path of the ray through the prism.
Date posted: May 25, 2019. Answers (1)
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Date posted: May 22, 2019. Answers (1)
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15cm.
Draw on the figure a ray diagram to locate the...(Solved)
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15cm.
Draw on the figure a ray diagram to locate the image formed.
Date posted: May 22, 2019. Answers (1)
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light in the prism is 1.88 ×...(Solved)
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(i) Determine the refractive index of the prism material for the light (speed of light in vacuum, c
= 3.0 × 108m/s.
(ii) Show on the figure, the critical angle, c, and determine its value.
(iii) Given that r = 21.2º, determine the angle θ.
Date posted: May 22, 2019. Answers (1)
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What is the depth of the sea bed if the...(Solved)
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(i) What is the amplitude of the wave in metres.
(ii) How many cycles are made.
(iii)Calculate the wavelength of...(Solved)
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(i) What is the amplitude of the wave in metres.
(ii) How many cycles are made.
(iii)Calculate the wavelength of the wave.
(iv) Calculate the frequency of the wave.
(v) Calculate the velocity of the wave.
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(i) Determine the effective resistance of the circuit.
(ii) Find the ammeter reading.
(iii)Find the p.d between...(Solved)
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(i) Determine the effective resistance of the circuit.
(ii) Find the ammeter reading.
(iii)Find the p.d between X and Y.
(iv) State the factors that affect the resistance of a conductor.
Date posted: May 22, 2019. Answers (1)
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It was noted that when S is open, the voltmeter...(Solved)
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(i) What is the e.m.f of the cell.
(ii) Determine the lost voltage.
(iii)Find the value of R.
(iv) Find the internal resistance of the cell.
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Date posted: May 22, 2019. Answers (1)
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Complete the ray diagram showing the reflected rays.
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The figure below shows two incident rays on a concave mirror from the top of an object.
Complete the ray diagram showing the reflected rays.
Date posted: May 22, 2019. Answers (1)
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