00:01
So, n question we have already given it voltage in terms of t it is equal to the 7 multiplied by e raised to the power minus 0 .3 t.
00:11
So, now, we will solve the a part of the question.
00:15
So, voltage after 3 second is equal to the we need to put t is equal to 3 then we have v3 is equal to the 7 multiplied by e raised to the power minus 0 .3 multiplied by 3.
00:30
So, when we solve this we will get here voltage equal to the 2 .8455 volts.
00:38
So, this is the answer of the a part of the question.
00:42
Now, we will solve the b part of the question.
00:44
So, when voltage will be 1 then we need to put the value of v is equal to 1 then we have here 1 is equal to the 7 multiplied by e raised to the power minus 0 .3 t.
00:56
When we solve this further we will get here on lsi we have ln multiplied by 1 divided by 7 is equal to the minus 0 .3 t.
01:10
So, when we solve this we will get t is equal to the 6 .48 seconds...