A TV of rating 80 W operates2 hours/day....

A TV of rating 80 W operates2 hours/day. Find the number of units consumed by the TV in a year.

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A TV of rating 80 W operates 4 hours/day. Find the number of units consumed by the TV in a year.

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A bulb of 100 W is operating for 6 hours a day. Find the units of energy consumed in 7 days.

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Two bulbs each of 60 W and 80 W power are used for (1/4)th a day and (1/2) a day, respectively. Write the following steps in a sequential order to find the total number of units consumed by them when they are used for 30 days. (a) Now, multiply E with 30, to get the energy consumed by them in 30 days. (b) Find the electric energy consumed by each bulb in a day using E_(1)=P_(1)t_(1) and E_(2)=P_(2)t_(2) . (c) Note down the powers of the bulbs and the time for which they are used per day as P_(1), P_(2) and t_(1) , t_(2) , respectively. (d) Convert the time into hours. (e) Find the total energy (E) consumed by them in one day, i.e., E=E_(1)+E_(2) . (f) Write the energy in terms of units, i.e., commercial unit of electric energy.

An electric appliance of rating 800 W is used 4 hours per day in the month of December . Find the number of units consumed.

TARGET PUBLICATION-EFFECTS OF ELECTRIC CURRENT -Practice Problems

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The heat generated is 5.4xx10^(4)J when a potential fifference of 50 ...
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Find the resistance of 60 W, 240 V bulb.
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An electric bulb is rated 220 V and 100 W. When it is operated on 110 ...
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An electric geyser rated 500 W operates one hour/day. If the cost of u...
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An electric appliance rated 400 W is used 5 hours per day in the month...
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