Which bulb will fuse when a 40 watt 220 volt lamp and 100...

Transcript

00:01 Hi everyone, so in the given question we have been given that which bulb will fuse when a 40 watt so a bulb one having power p1 let's suppose it as given as 40 watt and its voltage rating is being given as 220 volt is and another bulb is been given as whose power is given as 100 watt and its power voltage rating is given as 220 volt are connected in series and these two bulbs are connected in series and these two bulbs are connected in series across 40 volt supply so the main supply line has been given us of 40 volt so we have to find which bulb will fuse which bulb will fuse so to decide this which bulb will fuse we need to first calculate the current that has been flowing through the each bulb so because we know if the bulb having a specific value or the safe range of current and if the current is flowing beyond that limit so the bulb will definitely get fused so first we need to calculate the safe range of current that has been flowing in each bulb so current in bulb one let's suppose it has to be we are supposing it has to be b one so current in b1 we are supposing that current has to be i1 so we can say this can be written as our p1 can be written as i 1 into v1 so from here we can say the value of i1 can be written as p1 by v1 and p1 is been given as 40 40 by 220 that is we can write it as to be uh 2 by 11 all right so this is the value of current let's suppose in ampere we are getting and similarly uh we can calculate it for i2 also so we can say from this we can say the value of i2 comes out to be p2 by v2 and that is equals to p2 is being given as a hundred hundred by two twenty that is equals to ten by twenty two that is five by eleven ampere so from here we have calculated the safe range of current that is that can be flown in this bulbs now we have to calculate what exactly the current that has been flowing in the bulb since it has been connected to a forty volt supply so for that we can say therefore and since both bulb are connected in…

Question

WhIch bulb will fuse when a 40 watt, 220 volt lamp and 100 watt, 220 volt lamp are connected in series across 40 volt supply

Question

WhIch bulb will fuse when a 40 watt, 220 volt lamp and 100 watt, 220 volt lamp are connected in series across 40 volt supply

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