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Out of the two, a toaster of 1 kW and an...

Out of the two, a toaster of `1 kW` and an electric heater of `2 kW`, which has a greater resistance ?

Text Solution

Verified by Experts

Here, V = 230 V,
`P_(1) = 1 kW = 1000 W , P_(2) = 100 W`
`R_(1) = V^(2)/P_(1) = (230)^(2)/1000 = 52.9 Omega`
`R_(2) = V^(2)/P_(2) = (230)^(2)/100 = 529 Omega`
As `R_(2) gt R_(1)`, so 100 W bulb has greater resistance.
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