একটি বৈদ্যুতিক বাল্বের রেটিং 60 W, 220 V। এর ফিলামেন্টের রেজিস্ট্যান্স হল

An electric bulb is rated 60 W , 220 V . The resistance of its filament is

(a) Write Joule's law of heating. (b) The lamps, one rated 100 W, 220 V , and the other 60 W, 220 W V, are connected parallel to electric mains supply. Find the current drawn two bulbs from the line,if the supply voltage is 220 V.

Two bulbs having rating of 60 W, 220 V and 100 W, 220 V are joined (i) in series, (ii) in parallel. Which of the two will glow brighter in each case?

There are two electric bulb : (i) marked 60 W, 220 V and (ii) marked 100W, 220 V Which one of them has higher resistance ?

Three appliances are connected in parallel to the same source which provides a voltage of 220 V. A fuse connected to the source will blow if the current from the source exceeds 10 A. If the three appliances are rated at 60 W, 500 W and 1200 W at 220 V, will the fuse blow ?

Two lamps, one rated 100 W at 220 V , and the other 60 W at 220 V , are connected in parallel to the electric mains supply. What current is drawn from the line if the supply voltage is 220 V ?