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Ohm's Law
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Factors Affecting Resistance
Factors Affecting Resistance
6 Mins
Physics
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NEXT VIDEOS
Factors Affecting Resistance
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REVISE WITH CONCEPTS
Dependence of Resistance on Shape, Size,Resistivity and Temperature
Example
Definitions
Formulaes
Resistance And Resistivity
Example
Definitions
Formulaes
QUICK SUMMARY WITH STORIES
Dependence of Resistance on Shape, Size and Resistivity
3 mins read
Resistance and Resistivity
2 mins read
Resistivity and Conductivity
3 mins read
Effect of Temperature on Resistance
2 mins read
Ohm's Law, Resistance and Resistivity
3 mins read
Important Questions
A wire of length L and resistance R is stretched so that the length is doubled and area of cross section halved. How will (i) resistance change and (ii) resistivity change.
Medium
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Two wires of same material have lengths
$L$
and
$2L$
cross-sectional areas
$4A$
and
$A$
respectively. The ratio of their resistances would be
Medium
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(a) State Ohm's law.
(b) Describe an experiment to verify this law.
Easy
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State and explain Ohm's law.
Medium
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The voltage - current
$(V−I)$
graph of a metallic conductor at two different temperature
$T_{1}$
and
$T_{2}$
is shown below. At which temperature is the resistance higher?
Medium
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What length of copper wire of resistivity
$1.7×10_{−8}Ωm$
and radius 1 mm is required so that its resistance is
$1Ω$
?
Medium
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>
State Ohms law?
Medium
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>
Which is the S.I. unit of resistance ?
Easy
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>
On what factors does the resistance of a conductor depends ? Write SI unit of resistance
Easy
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>
State Ohm's law. Draw a graph between voltage and current for a metallic conductor. Draw a circuit diagram of a circuit which consists of battery, ammeter, voltmeter, resistor, rheostat and a key.
Medium
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>