Q. 54.8( 9 Votes )

# In which of the f

Answer :

(i) Here current (I) = 1 A, Resistance (R) = 300 ohm, time(t) = 1h

We know that

P = I2R = 12 x 300 = 300 W

E = P x t = 300 x 1 = 300 Wh

(ii) Here Current (I) = 2 A Resistance(R) = 100 ohm, time (t) = 1h

We know that

P = I2R = 22 x 100 = 400 W

E = P x t = 400 x 1 = 400 Wh

Hence, in case (ii), the electrical energy consumed per hour is more.

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