Find the resistance of 80 W, 240 V bulb....

Find the resistance of 80 W, 240 V bulb.

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The correct Answer is:

`720Omega`

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Find the resistance of 60 W, 240 V bulb.

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A bulb of 60 W is connected across a source of 240 V. Find the resistance of the bulb.

A bulb of 40 W is connected across a source of 220 V . Find the resistance of the bulb.

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A 100 W bulb is designed to operate on a potential difference of 230 V . (i) Find the resistance of the bulb. (ii) Find the current drawn by the bulb if it is operated at a potential difference for which it is designed. (iii) Find the current drawn and power consumed by the bulb if it is connected to a 200 V supply.

In India electricity is supplied for domestic use at 220 V . It is supplied at 110 V in USA. If the resistance of a 60 W bulb for use in India is R , the resistance of a 60 W bulb for use in USA will be

A room heater is rated 500 W, 220V . (a) Find the resistance of its coil. (b) If the supply voltage drops to 200 V , what will be the power consumed? ( c) If an electric bulb rated 100 W, 220 V is connected in series with this heater, what will be the power consumed by the heater and by the bulb when the supply is at 220 V ?

TARGET PUBLICATION-EFFECTS OF ELECTRIC CURRENT -Practice Problems

The heat generated is 5.4xx10^(4)J when a potential fifference of 50 ...
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Calculate the heat in joules, generated in a coil of resistance 400 'o...
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Find the resistance of 80 W, 240 V bulb.
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Two tungsten bulbs of wattage 100 W and 120 W power work on 220 V pote...
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Who Will spend more electrical energy ? 500 W TV set in 30 mins, or 60...
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Calculate the heat generated in a coil of resistance 40 'ohm' in joule...
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The heat generated is 5.4xx10^(4)J when a potential fifference of 50 ...
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Calculate the heat generated in joule in a coil when potential differe...
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Calculate the heat in joules, generated in a coil of resistance 400 'o...
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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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A TV of rating 80 W operates2 hours/day. Find the number of units cons...
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An electric appliance rated 400 W is used 5 hours per day in the month...
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