Question 7 3pts you have a simple circuit with a total...

Question 7 3pts You have a simple circuit with a total resistance of 10. If a 0.98A current is maintained in that circuit, how much energy (in Joules) is delivered through the circuit in 25 seconds? Question 8 4pts If an AC current has an RMS value of 8.2 A, then what is the peak value of the current?

Transcript

00:01 Hi students, here in this question we have to consider this circuit and in the first part of the question we have to find out the equivalent resistance.

00:10 So to find out the equivalent resistance, first of all we can consider this rightmost loop.

00:18 Okay, so here 6 ohm, 8 ohm and 6 ohm are there and these are parallel, isn't it? so we can, okay, this is r1 and this is r2, r3, r4, then r5, r6, r7, r8 and r9.

00:42 Okay, then here we have r3, r4, r9.

00:47 These are connected in series, isn't it? so we can find out the equivalent resistance of these resistance.

00:56 So r3, 4, 9, okay, so r3, 4, 9.

01:01 So that's equal to when resistors are connected in series, the equivalent resistance will be r3 plus r4 plus r9, isn't it? so that's equal to here r3, 6 plus 8 plus 6.

01:18 So that's equal to 20 ohm.

01:22 So the equivalent resistance here is 20 ohm.

01:26 Okay.

01:26 Now, so this part of this loop will be like 20 ohm and here we have r5.

01:43 So here 20 ohm again.

01:46 So this part will be in equivalent to 20 ohm.

01:52 Okay, so this 20 ohm and this 20 r5 are in parallel combination.

02:00 So we can find out r3, 4, 9, 5.

02:08 So these are the parallel combination.

02:12 So r3, 4, 9 is 20 ohm.

02:15 So for parallel combination 1 by r3, 4, 9 plus 1 by r5 all raised to minus 1.

02:26 So that's equal to 1 by 20 plus 1 by 20 all raised to minus 1.