Solveeit Logo
Login

Question

Question: 1 kilowatt hour (k Wt) is equal to:...

1 kilowatt hour (k Wt) is equal to:

A

2.25×1022eV2.25 \times 10 ^ { 22 } \mathrm { eV }

B

2.25×1023eV2.25 \times 10 ^ { 23 } \mathrm { eV }

C

2.25×1025eV2.25 \times 10 ^ { 25 } \mathrm { eV }

D

2.25×1027eV2.25 \times 10 ^ { 27 } \mathrm { eV }

Answer

2.25×1025eV2.25 \times 10 ^ { 25 } \mathrm { eV }

Explanation

Solution

1 kilowatt hour (kW h) = (103 W) × (3600 s)

=3.6×1061.6×10−19eV= \frac { 3.6 \times 10 ^ { 6 } } { 1.6 \times 10 ^ { - 19 } } \mathrm { eV } (∵1eV=1.6×10−19 J)\left( \because 1 \mathrm { eV } = 1.6 \times 10 ^ { - 19 } \mathrm {~J} \right)

=2.25×1025eV2.25 \times 10 ^ { 25 } \mathrm { eV }