Commercial Electrical Energy
An electrical appliance uses a lot of electric energy when it is operated e.g., geysers heaters etc. The electrical energy consumed is dependent on the time for which a specific appliance of fixed power rating is used. However, the energy used in hour is denoted as `1 kWh=3.6 xx 10^6` joule. This is represented as 1 unit. Different electrical appliance have difference power consumption which is mentioned on the device clearly.
Two electric bulbs P and Q having resistances ratio 1 : 2 will consume power in the ratio
Options:
(a) 1:2
(b) 2 :1
(c) 1: 4
(d) 4 : 1