দুটি বৈদ্যুতিক বাতি 220V হিসাবে রেট করা হয়েছে। 40W এবং 220V,60W। l এ প্রতি সেকেন্ডে উৎপন্ন তাপ নির্ণয় কর...

How many 60W bulbs may be safely used on 220V line using a 5A fuse?

How many 60W bulbs may be safely used on 220V line using a 5A fuse?

A house is fitted with seven tubelights of rating 220 V, 40 W each , two bulbs of rating 220 V, 60 W each, five fans each drawing a current of 0.4 at 220 V , and a heater of resistance 48.4 Omega . The main line power supplied to the house is at 220 V . Calculate the bill for the month of january if tubelights and bulbs are used for 6 h daily, fans for 1 h daily , and heater for 10 h daily. The electricity is to cost Rs. 2 per unit.

Two electric lamps are rated as 220V. 40 W and 220V,60W. Find the heat generated per second in lamp when they are connected in series across 220V mains. Given 1 cal=4.2J.

Two electric lamps are rated as 220V. 40 W and 220V,60W. Find the heat generated per second in lamp when they are connected in series across 220V mains. Given 1 cal=4.2J.

Two lamps, one rated 40W at 220V and the other 60W at 220 V, are connected in parallel to the electric supply at 220V. (a) Draw a circuit diagram to show the connections. (b) Calculate the current drawn from the electric supply. (c) Calculate the total energy consumed by the two lamps together when they operate for one hour.

Ten 60 W, 220 V bulbs are connected in series to 220 V supply . Power consumed in the circuit is