Electronics - Parallel Circuits - Discussion
Discussion Forum : Parallel Circuits - General Questions (Q.No. 1)
1.
When parallel resistors are of three different values, which has the greatest power loss?
Discussion:
32 comments Page 2 of 4.
Bhawna said:
1 decade ago
The resistors are in parallel & in parallel voltage is same but in parallel current divides, current follows the low resistive path, so high pwr loss occurs in small resistance.
Rajashekhar said:
8 years ago
If voltage across in parallel resistor is same so current flow is depends on the value of restistance of resistor.
High resistor have low current flow & power loss also low.
High resistor have low current flow & power loss also low.
Mahtaj Banu said:
1 decade ago
As p=v*i.
And v=i*r.
So on substituting we in p, we get p=i*i/r.
Which implies p and are are inversely proportional. So for high power it is low resistor and vice-versa.
And v=i*r.
So on substituting we in p, we get p=i*i/r.
Which implies p and are are inversely proportional. So for high power it is low resistor and vice-versa.
CATcracker said:
1 decade ago
In parallel voltage constant dats by we take p=v^2/r...if we take p=i^28r...p may vary with variation of "i" bt in p=v^2/r.....p varies with variation of r.
Yalam vyshnavi said:
10 years ago
Please tell me the difference between power & power loss for a resistor. Why we have to think that there is a power loss in the resistor, what about power gain?
Siddhartha said:
1 decade ago
Since the tendency of current is to chose least resistance path and p=i^2r then the current inside lowest resistance will higher so the power is also higher.
Rupa Khilare said:
1 decade ago
Higher the value of resistor, lesser the value of current, and as value of current is less then greatest the power loss.
As, p=vi
=2v/r.
As, p=vi
=2v/r.
Lakshmi said:
1 decade ago
As the resistors are connected in parallel, the voltages are same. According to P=V^2/R smaller the resistance greater the power loss.
Jadav said:
6 years ago
Because W=I*I*R.
So small resistance have high current and power is square of the current.
So, Ans is the smallest resistance.
So small resistance have high current and power is square of the current.
So, Ans is the smallest resistance.
(1)
Azhagusurya said:
1 decade ago
p = vi-----1.
i = v/R----2.
Sub 2 in 1.
p = v(v/R) = v^2/R.
So when resistance decreases power loss increases.
i = v/R----2.
Sub 2 in 1.
p = v(v/R) = v^2/R.
So when resistance decreases power loss increases.
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