Exercise XVI — task. Science CBSE, Class 10.

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Which uses more energy, a $250\ W$ TV set in $1\ hr$ , or a $1200\ W$ toaster in $10\ minutes$ ?

The formula for energy consumption is

$H = i \times i$

Energy consumed by a TV for an hour:

$P$

$=$

$250\ W$

Time,

$t$

$=$

$1\ hour$

On converting hour to seconds, we get

$t$

$=$

$s$

[Note: Enter the answer as a whole number.]

The energy consumed by a TV for an hour is

$i \times 10^{i} J$ .

Energy consumed by toaster in $10\ minutes$ :

$P$

$=$

$1200\ W$

Time,

$t$

$=$

$10\ minutes$

On converting minutes to seconds, we get

$t$

$=$

$s$

[Note: Enter the answer up to one decimal place.]

The energy consumed by a toaster for

$10\ minutes$ is

$i \times 10^{i} J$ .

Thus, theenergy consumed by the TV is the toaster.

Did you find an error?

16. Exercise XVI