Electrical Engineering - Inductors - Discussion
Discussion Forum : Inductors - General Questions (Q.No. 11)
11.
The winding resistance of a coil can be increased by
Discussion:
9 comments Page 1 of 1.
Lasya said:
10 years ago
L = (no. of turns)2*permeability*area/length.
Winding resistance of coil means inductance will come to the picture. Hence it can be increased by increasing number of turns & using thinner wire.
Option D is correct.
Winding resistance of coil means inductance will come to the picture. Hence it can be increased by increasing number of turns & using thinner wire.
Option D is correct.
(2)
Hopeso said:
1 decade ago
R = PL/A.
R = Resistance.
L= length of wire (wire is wound in, to form coil and number of coils connected in series gives winding)- directly proportional to resistance.
A= Area of cross section - inversely proportional to resistance.
As number of turns increases the length of coil also increases and
using a thinner wire gives lesser area of cross section.
Thus answer is D.
R = Resistance.
L= length of wire (wire is wound in, to form coil and number of coils connected in series gives winding)- directly proportional to resistance.
A= Area of cross section - inversely proportional to resistance.
As number of turns increases the length of coil also increases and
using a thinner wire gives lesser area of cross section.
Thus answer is D.
(1)
Hubha93 said:
1 decade ago
Here overall the length of wire is increasing by increasing the no.of turns and in case of using thin wire cross section area is decreasing so resistance is increasing in both the cases.
(1)
Msr said:
1 decade ago
R =PL/A
Vijay said:
1 decade ago
What about turns?
Cm prasad said:
1 decade ago
Answer D is right if "impedance" has to increase.
But here answer should be B.
Because here we have to increase only "resistance" which can be done by using thin wire.
Increasing in number of turns will increase inductive reactance.
But here answer should be B.
Because here we have to increase only "resistance" which can be done by using thin wire.
Increasing in number of turns will increase inductive reactance.
Nilesh said:
8 years ago
Is it correct or wrong that large no of coils have less resistance than less no of the same coil?
If yes/no please explain.
If yes/no please explain.
Sharan said:
8 years ago
Well explained @Lasya.
RAMU said:
7 years ago
Answer is A.
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