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An electric iron consumes energy at the rate of 420W when heating is at maximum rate & 180W when heating is at minimum rate. What is the current & resistant in each case?
Most Upvoted Answer
An electric iron consumes energy at the rate of 420W when heating is a...
. If it is used for 2 hours, the energy consumed will be:

Energy consumed = Power x Time

Energy consumed = 420W x 2 hours

Energy consumed = 840 Wh (watt-hours)

Note: 1 kWh (kilowatt-hour) = 1000 Wh, so the energy consumed can also be expressed as 0.84 kWh.
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An electric iron consumes energy at the rate of 420W when heating is a...
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An electric iron consumes energy at the rate of 420W when heating is at maximum rate & 180W when heating is at minimum rate. What is the current & resistant in each case?
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