A large rotating flywheel uniformly increases in angular speed from rest
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Answer:
In series combination
RS = RR R 1 2 + + .... n
RS = RR n + ..... times
RS = nR
In parallel combination:
R
1
P
..... RR R
11 1
1 2 n
= + +
R
1
P
..... RRR n
111 = +++ + times
R
1
P
..... times
R
1 1 n = + +
R
1
P R
n =
RP n
R =
ii. Given:
R1 = 3 Ω
R2 = 4 Ω
R3 = 12 Ω
R
1
RRR
111
123
= + + 3
1
4
1
12
1 = + +
12
431 = + +
R 8
12 = Ω 2
3 = Ω
= 1 5. Ω
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