Several electric bulbs each of power 10 W designed to be used on a 220 V electric supply line . How many bulbs can be connected in parallel with each other across two wires at 220 V line, if the maximum allowable current is 5 A?

Open in App

Solution

We found a similar question to the one that you posted. Please check it out here.
Resistance of each bulb, r = V2P = 220210 = 4840 Ω

Total resistance in the circuit, R = 220V5A = 44 Ω

Let n be the number of bulb (each of resistance r) to be connected in parallel to obtain a resistance R.

Clearly, Rnet = rn or n = rR = 4840Ω44Ω = 110 bulbs

Suggest Corrections

Similar questions

Several electric bulbs designed to be used on a 220 V electric supply line, are rated 10 W. How many lamps can be connected in parallel with each other across the two wires of 220 V line if the maximum allowable current is 5 A?

Q. Question 12
Several electric bulbs designed to be used on a 220 V electric supply line, are rated 10 W. How many lamps can be connected in parallel with each other across the two wires of 220 V line if the maximum allowable current is 5 A?

Join BYJU'S Learning Program