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2 Kw X 40/60 X 30= 40Kw-Hr
40 X 15.50
Sh 620
sharon kalunda answered the question on September 10, 2019 at 08:37
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A wire of length 1.5m offers resistance of 6.5 ohms to the flow of current through it. If the cross section area is 5.0×10-6m2.calculate the resistivity of the material.
Date posted: September 10, 2019. Answers (1)
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Date posted: September 10, 2019. Answers (1)
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Date posted: September 10, 2019. Answers (1)
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Determine the new angle of reflection.
Date posted: September 10, 2019. Answers (1)
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iii) The useful work done by the pulley system.
iv) The efficiency of the system
Date posted: September 10, 2019. Answers (1)
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The figure below shows a block of mass 50g and density 2000kg/m3 submerged in a certain liquid and suspended from uniform horizontal beam by means of a string. A mass of 40g suspended from the other end of the beam puts the system in equilibrium
(i) Determine the up-thrust force acting on the block.
(ii) Calculate the density of the liquid.
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Date posted: September 10, 2019. Answers (1)
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Date posted: September 10, 2019. Answers (1)
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The figure below shows an arrangement to demonstrate diffusion through solids.
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Date posted: September 10, 2019. Answers (1)
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a) State what happens if one places an item on the weighing...(Solved)
The figure below shows a simple instrument designed by a student for weighing objects.
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b) State two properties of water that make it suitable for this purpose.
Date posted: September 10, 2019. Answers (1)
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Date posted: September 10, 2019. Answers (1)
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Date posted: September 10, 2019. Answers (1)
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An X-ray tube operates with a p.d. of 200kv. Only 0.5% of the kinetic energy of the electrons is converted into X-rays. Calculate the frequency of the X-rays produced, take planks constant = 6.63 x 10-34Js.
Date posted: September 10, 2019. Answers (1)
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State what determines the quality of X-rays in an X-rays tube.
Date posted: September 10, 2019. Answers (1)
- State how the following energy losses are minimized in a transformer.
I Eddy current.
II Flux linkage.(Solved)
State how the following energy losses are minimized in a transformer.
I Eddy current.
II Flux linkage.
Date posted: September 10, 2019. Answers (1)
- The figure below shows capacitors connected to 3v supply.(Solved)
The figure below shows capacitors connected to 3v supply.
Calculate:
(i) The combined capacitance.
(ii) The charged stored in the 2.4μF capacitor.
(iii) The charge stored in 2μF capacitor.
Date posted: September 10, 2019. Answers (1)
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Four 40w bulbs and six 100w bulbs were switched on for 2 hours in the morning and 3 hours at night each day for domestic use in a certain institution. Find the monthly bill for the consumer given that the cost of electricity in the country is at Sh.6.50 per unit. (Take one month to be of 30 days).
Date posted: September 10, 2019. Answers (1)
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The figure below shows some resistors connected in part of a circuit.Determine the effective resistance.
Date posted: September 10, 2019. Answers (1)
- The figure below shows a large battery connected a resistor of 1000 ohms. The potential difference across the resistor is 50V.(Solved)
The figure below shows a large battery connected a resistor of 1000 ohms. The potential difference across the resistor is 50V.
Determine:
(i) The ammeter reading (A).
(ii) The electrical energy dissipated by the resistor in one minute.
Date posted: September 10, 2019. Answers (1)
- The figure below shows a diode D connected to a source of a.c current and a resistor.Sketch in the axis below the output observed in...(Solved)
The figure below shows a diode D connected to a source of a.c current and a resistor.
Sketch in the axis below the output observed in the C.R.O.
Date posted: September 10, 2019. Answers (1)
- A heater of resistance R1 is rated P watts, V volts while another of resistance R2 is rated 2P watts, V/2 volts. Determine the ratio...(Solved)
A heater of resistance R1 is rated P watts, V volts while another of resistance R2 is rated 2P watts, V/2 volts. Determine the ratio R1 to R2.
Date posted: September 10, 2019. Answers (1)