Electronics - Parallel Circuits - Discussion
Discussion Forum : Parallel Circuits - General Questions (Q.No. 12)
12.
In the given circuit, Channel 1 of the stereo amplifier outputs 12 V to the speakers. How much total power is the amplifier delivering to the speakers?
Discussion:
12 comments Page 2 of 2.
Pre said:
9 years ago
p = i^2 * r.
r = r1 * r2/r1 + r2.
=> 8 * 8/8 + 8,
=> 64/16,
=> 4,
r = 4.
Don't we know I?
So that;
i = (v/r).
p = (v/r)^2 * r,
p = ((12/4)^2) * 4,
p = (3^2) * 4,
p = 9 * 4,
p = 36.
Then the answer is 36- (c).
r = r1 * r2/r1 + r2.
=> 8 * 8/8 + 8,
=> 64/16,
=> 4,
r = 4.
Don't we know I?
So that;
i = (v/r).
p = (v/r)^2 * r,
p = ((12/4)^2) * 4,
p = (3^2) * 4,
p = 9 * 4,
p = 36.
Then the answer is 36- (c).
(1)
Krunal said:
9 years ago
p = v * i
v = 12,
i = ?
R = r1 * r2/r1 + r2.
= 8 * 8/8 + 8,
= 64/16,
R = 4.
v = ir,
i = v/r,
= 12/4,
i = 3.
p = vi.
p = 12 * 3,
p = 36.
v = 12,
i = ?
R = r1 * r2/r1 + r2.
= 8 * 8/8 + 8,
= 64/16,
R = 4.
v = ir,
i = v/r,
= 12/4,
i = 3.
p = vi.
p = 12 * 3,
p = 36.
(3)
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