Electronics - Parallel Circuits - Discussion
Discussion Forum : Parallel Circuits - General Questions (Q.No. 17)
17.
Which component is of the wrong value?
Discussion:
23 comments Page 2 of 3.
Arunkumar said:
1 decade ago
I1=V/R=48/1K=48mA=0.048A
It=I1+0.052(in circuit itself)
It=0.048+0.052=0.1A
It=0.1A
P=VI
P=48*0.1=4.8W
so the watt meter reading should be 4.8 watts but the circuit shows 9.408W.
so mistake in R1.
Answer is A
It=I1+0.052(in circuit itself)
It=0.048+0.052=0.1A
It=0.1A
P=VI
P=48*0.1=4.8W
so the watt meter reading should be 4.8 watts but the circuit shows 9.408W.
so mistake in R1.
Answer is A
Vignesh said:
1 decade ago
How the current flows, when the source is open circuited with voltmeter.
Achwaria said:
1 decade ago
One way to start is that, the power comes from the smallest resistor. So, after verifying that currents through R3 and R2(0.04A) and R4(0.012) sum up to 0.052A, we search for a smaller value for R1 that could elevate the power to 9.408W which is exactly 1/3K.
Padhu ar said:
1 decade ago
@Vignesh.
Its watt-meter not a voltmeter. It connects + and - terminal. So it will work.
Its watt-meter not a voltmeter. It connects + and - terminal. So it will work.
Rakesh gupta said:
1 decade ago
Total current in circuit is I= p/v; 9.408/48 = 0.196.
And sum of current through r2, r3 & r3 equals to 0.052.
Current through r1 is 0.048.
And sum of the current through r1, r2, r3, and r4 is 0.102.
The difference between this is 0.196 - 0.102 = 0.092.
They r1 has wrong value r1 t = should have value 144K ohm.
And sum of current through r2, r3 & r3 equals to 0.052.
Current through r1 is 0.048.
And sum of the current through r1, r2, r3, and r4 is 0.102.
The difference between this is 0.196 - 0.102 = 0.092.
They r1 has wrong value r1 t = should have value 144K ohm.
Ayd said:
1 decade ago
Guys suppose if R1 is ok 333 ohm but problem is with R2 or R3. Then how it will be opted out which one (R2 or R3) is not correct because before R2 we have a given value 0.052 and after R3 also given 0.012 but is not given between R2 & R3.
Please explain although might not look a problem to you.
Please explain although might not look a problem to you.
Armandwish said:
10 years ago
@Manikandan.
Your method is wrong because I = Net voltage/Net resistance.
Your method is wrong because I = Net voltage/Net resistance.
Malathi said:
9 years ago
@H@Ri.
You are correct! Thanks for your explanation.
You are correct! Thanks for your explanation.
Saraswathi said:
9 years ago
Near r1 the negative terminal is connected to positive.
@abd@ak said:
8 years ago
@H@Ri.
Your explanation is good but please tell me power = V^/R or v/r in your explanation you describe that p=v/r. Please explain anyone.
Your explanation is good but please tell me power = V^/R or v/r in your explanation you describe that p=v/r. Please explain anyone.
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