Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 10 Answered

if resistance is opposing the flow of current,so what is the need of resistance??
Asked by Arghya | 09 May, 2013, 04:18: PM
answered-by-expert Expert Answer
All materials naturally contain some resistance to the flow of electric current. Though resistance is not needed, it is always there. We have not found a way to make conductors that do not have some resistance.
Answered by | 10 May, 2013, 12:04: AM

Application Videos

Concept Videos

Multiple Choice Questions Practice Test
Answered Unanswered My Questions My Answers
CBSE 10 - Physics
write ohm's law for electric circuit. Also write the necessary formula for this .
Asked by khajannirwan | 27 Feb, 2024, 10:20: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
find Req
question image
Asked by sakshikatewa0 | 08 Feb, 2024, 12:48: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
Will a current carrying conductor produce an electric field?
Asked by saanviyadla | 24 Jan, 2024, 07:06: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
resistivity
Asked by kamalaranjanmohantymohanty5 | 06 Jan, 2024, 10:05: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
find the new resistance of wire length l area of cross section A if it is folded 4 times
Asked by nandhikasugumar | 05 Oct, 2023, 04:01: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
finding the net resistance  
question image
Asked by daniya062008 | 02 Oct, 2023, 08:25: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
the resistance of a wire of 0.01 cm radius is 10 ohm.if the resistivity of the material of the wire is 50*10^-8 ohm meter find the length of the wire
Asked by prassanna.j | 03 Sep, 2023, 12:28: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
Nichrome wire of length L and radius R has resistance 10 ohm.How would the resistance of the wire change when: only diameter of the wire is doubled?Justify 
Asked by prassanna.j | 03 Sep, 2023, 12:21: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
The resistance of a resistor is kept constant and the potential difference across its two ends is decreased to half of its former value.State the change that will occur in the current through it.
Asked by prassanna.j | 03 Sep, 2023, 12:13: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 10 - Physics
A given length of a wire is doubled of itself and this process is repeated once again.By what factor does the resistance of the wire changes?
Asked by prassanna.j | 03 Sep, 2023, 12:11: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt
Get Latest Study Material for Academic year 24-25 Click here
×