00:01
Here we have three resistors connected in series to a voltage source.
00:06
Let us first draw the figure.
00:08
Here we have resistance r1, resistance r2 and resistance r3.
00:14
Current i is flowing through the circuit.
00:18
We have volt source as 115 volt.
00:23
So here it is vs.
00:25
Let it be denoted as vs, which is a source voltage.
00:27
So given r1 equals 60 oms, the source voltage as 150 volts, and v2, which is a potential drop across r2, v2 is given as 38 volt.
00:48
Current i is given as 0 .65 volt.
00:52
Now we need, sorry, 0 .65 ampere.
00:56
Now we have to calculate the resistance of r3.
00:59
As well as r3 r2 as well as r3 now we can calculate the voltage drop across r1 so the voltage drop across r1 which is v1 this is this will be equals to current i into r1 according to oms low so this is equals to 0 .65 ampiers into r1 given as 60 oms which will be equals to 39 volt.
01:33
So this is the voltage drop or potential drop across r1.
01:37
Now the potential drop across resistance 3, that is r3, that is v3 will be equals to the source voltage minus v1 minus v2...