Total units consumed= [3+2+(2x0.5)]x5/60
=3kWh
Total cost= 3kWh x sh 1.50
= Ksh 4.50
Moraa orina answered the question on April 11, 2018 at 17:52
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A six bulb arrangement in a house runs for 8 hours every night for 5 days. If each bulb is rated 100 W and the cost of...
(Solved)
A six bulb arrangement in a house runs for 8 hours every night for 5 days. If each bulb is rated 100 W and the cost of electrical energy is sh. 2.60 per unit, how much will the owner of the house pay at the end of the five days?
Date posted:
April 11, 2018
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Answers (1)
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April 11, 2018
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Date posted:
April 11, 2018
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Date posted:
April 11, 2018
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Date posted:
April 11, 2018
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A student designed a transformer to supply a current of 10A at a potential difference of 60V to an electric motor from an ac supply...
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Date posted:
April 11, 2018
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Answers (1)
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Calculate the number of turns of the secondary coil of a step down transformer which would enable a 12V bulb
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Date posted:
April 11, 2018
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Date posted:
April 11, 2018
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Answers (1)
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An X-ray machine produces a radiation of wavelength 1.0x10-11m. calculate:
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(Solved)
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Date posted:
April 11, 2018
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Answers (1)
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A radio transmitter produces waves of frequency 1.0x108Hz. Calculate the wavelength of the signal.
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Date posted:
April 11, 2018
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Date posted:
April 11, 2018
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The maximum speed at which a motorist can negotiate a corner on a level ground is 20m/s. if the radius
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(Solved)
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Date posted:
April 11, 2018
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A bob of mass 1kg is moving in a uniform circular path in a vertical plane of radius 1m. If it is whirled at...
(Solved)
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Date posted:
April 11, 2018
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Answers (1)
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An object of mass 0.4kg is rotated by a string at a constant speed, v in a vertical circle of radius 1m. If the
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(Solved)
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Date posted:
April 11, 2018
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Answers (1)
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An object of mass 8kg is whirled round rapidly in a vertical circle of radius 2m with a constant speed of
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(Solved)
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Date posted:
April 11, 2018
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Answers (1)
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A stone of mass 0.6kg attached to a string of length 0.5m is whirled in a horizontal circle at a constant speed. If the maximum...
(Solved)
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Date posted:
April 11, 2018
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Answers (1)
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A stone of mass 2kg is whirled in a horizontal circle of radius 0.5m. The tension in the string was found to
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(Solved)
A stone of mass 2kg is whirled in a horizontal circle of radius 0.5m. The tension in the string was found to
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Date posted:
April 11, 2018
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Answers (1)
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A car of mass 100kg moves round a circular track of radius 100m with a linear speed of 20m/s. calculate:a) The angular velocityb) The centripetal...
(Solved)
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Date posted:
April 11, 2018
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Answers (1)
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A particle moves at an angular velocity of 10p rads-1 along a circular path of radius 20cm. calculate its linear speed.
(Solved)
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Date posted:
April 11, 2018
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Answers (1)
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Date posted:
April 11, 2018
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Answers (1)