Question

Calculate the electrical energy consumed by a 1200 watt to aster in 30 min ?

Answer 1

Answer

(i) P=1200 W. t= 30 min = 0.5 h. Electrial energy(E)= P x t. = 1200 x 0.5. = 600 W/h = 0.6 kWh.

(ii) Energy consumed in 30 days.

= 0.6 x 30 =18 kWh.

Cost of using 18 unit = Rs. 4 x 18= Rs.

Answer 2

$\boxed{\rm{\orange{Question \longrightarrow }}}$

Calculate the electrical energy consumed by a 1200 W toaster in 30 minute.

$\boxed{\rm{\red{Given \longrightarrow }}}$

• Power {P}=1200 W
• time [t] = 30 min = 0.5 h

Formula used-

$\boxed {\bf{\pink{Electrial\ energy(E)= P \times t }}}$

$\boxed{\rm{\blue{SoLution \longrightarrow }}}$

$\boxed{\bf{Electrial\ energy(E)= P \times t }}$

Put value in the formula we get,

$\sf{E= 1200 \times 0.5 = 600 W/h = 0.6 kWh}$

$\bf{\bigstar \therefore Electric\ energy = 0.6kWh\bigstar}$

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