Answer:
The power is 0.73 kW.
(B) option is correct.
Explanation:
Given that,
Charge = 9000 C
Potential difference = 220 V
Time = 45 min
We need to calculate the energy required to transfer charge Q through V
Using formula of energy
[tex]E =QV[/tex]
Put the value into the formula
[tex]E=9000\times220[/tex]
[tex]E=1980000\ J[/tex]
We need to calculate the power
Using formula of power
[tex]P=\dfrac{1980000}{45\times60}[/tex]
[tex]P=733.33\ W[/tex]
[tex]P=0.73\ kW[/tex]
Hence, The power is 0.73 kW.
