RRB Group D 23-Oct-2018 Shift 3 Solved Paper

Question : 100 of 100

Marks: +1, -0

An electric bulb of

100 \ { W}

is used for 9 hours per day. What will be the 'units' of energy consumed in 1 day by the bulb?

0.6 units
1.2 units
0.9 units
1.9 units

Validate

Solution:

Energy Consumed is expressed in kiloWatt hour (kWh) or what we commonly call as unit
Energy = Power × Time (for getting Energy in "kiloWatt hour or unit", make Power in kilo Watts and Time in Hours). So Here,
Power

=100

Watts or 0.1 kilo Watts
Time

=9

Hours
So Energy (in

{kWh}

or Unit

)=0.1 {kW} \×9

hour

=0.9 {kWh}

0.9 {\Units}

Go to Question:

Prev Question