OHM'S LAW \& FACTORS EFFECTING RESISTANCE
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Current Electricity

268206 Fuse wire is a wire of

1 low medting point and low value of α
2 high melting pointand highvalueof α
3 high melting point and low value of α
4 low melting point and high value of α
Current Electricity

268207 **Assertion :** M aterial used in the construction of a standard resistance is constantan or manganin.
**Reason :** Temperature coefficient of constantan is very small.

1 Both(A) and (R) aretrueand (R) isthecorrect explanation of A.
2 Both (A) and (R) are true but (R) is not the correct explanation of A.
3 (A) is rruebut (R) isfalse
4 (A) is falsebut(R) istrue
Current Electricity

268209 **Assertion (A) :** W hen the radius of a copper wire is doubled, its specific resistance gets increased.
**Reason ( R ):** Specific resistance is independent of cross-section of material used

1 Both (A) and (R) aretrueand (R) isthecorrect explanation of A.
2 Both (A) and (R) are true but (R) is not the correctexplanationof A.
3 (A) istruebut (R) isfalse
4 (A) isfalsebut (R) istrue
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Current Electricity

268206 Fuse wire is a wire of

1 low medting point and low value of α
2 high melting pointand highvalueof α
3 high melting point and low value of α
4 low melting point and high value of α
Current Electricity

268207 **Assertion :** M aterial used in the construction of a standard resistance is constantan or manganin.
**Reason :** Temperature coefficient of constantan is very small.

1 Both(A) and (R) aretrueand (R) isthecorrect explanation of A.
2 Both (A) and (R) are true but (R) is not the correct explanation of A.
3 (A) is rruebut (R) isfalse
4 (A) is falsebut(R) istrue
Current Electricity

268208 **Assertion (A) :** B ending of a conducting wire effects electrical resistance.
**R eason ( R ) :** R esistance of a wire depends on resistivity of that material.

1 Both (A) and (R) aretrueand (R) isthecorrect explanation of A.
2 Both (A) and (R) are true but (R) is not the correct explanationof A.
3 (A) istruebut (R) isfalse
4 (A) isfalsebut (R) istrue
Current Electricity

268209 **Assertion (A) :** W hen the radius of a copper wire is doubled, its specific resistance gets increased.
**Reason ( R ):** Specific resistance is independent of cross-section of material used

1 Both (A) and (R) aretrueand (R) isthecorrect explanation of A.
2 Both (A) and (R) are true but (R) is not the correctexplanationof A.
3 (A) istruebut (R) isfalse
4 (A) isfalsebut (R) istrue
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Current Electricity

268206 Fuse wire is a wire of

1 low medting point and low value of α
2 high melting pointand highvalueof α
3 high melting point and low value of α
4 low melting point and high value of α
Current Electricity

268207 **Assertion :** M aterial used in the construction of a standard resistance is constantan or manganin.
**Reason :** Temperature coefficient of constantan is very small.

1 Both(A) and (R) aretrueand (R) isthecorrect explanation of A.
2 Both (A) and (R) are true but (R) is not the correct explanation of A.
3 (A) is rruebut (R) isfalse
4 (A) is falsebut(R) istrue
Current Electricity

268208 **Assertion (A) :** B ending of a conducting wire effects electrical resistance.
**R eason ( R ) :** R esistance of a wire depends on resistivity of that material.

1 Both (A) and (R) aretrueand (R) isthecorrect explanation of A.
2 Both (A) and (R) are true but (R) is not the correct explanationof A.
3 (A) istruebut (R) isfalse
4 (A) isfalsebut (R) istrue
Current Electricity

268209 **Assertion (A) :** W hen the radius of a copper wire is doubled, its specific resistance gets increased.
**Reason ( R ):** Specific resistance is independent of cross-section of material used

1 Both (A) and (R) aretrueand (R) isthecorrect explanation of A.
2 Both (A) and (R) are true but (R) is not the correctexplanationof A.
3 (A) istruebut (R) isfalse
4 (A) isfalsebut (R) istrue
NEET DIGITAL LIBRARY
Current Electricity

268206 Fuse wire is a wire of

1 low medting point and low value of α
2 high melting pointand highvalueof α
3 high melting point and low value of α
4 low melting point and high value of α
Current Electricity

268207 **Assertion :** M aterial used in the construction of a standard resistance is constantan or manganin.
**Reason :** Temperature coefficient of constantan is very small.

1 Both(A) and (R) aretrueand (R) isthecorrect explanation of A.
2 Both (A) and (R) are true but (R) is not the correct explanation of A.
3 (A) is rruebut (R) isfalse
4 (A) is falsebut(R) istrue
Current Electricity

268208 **Assertion (A) :** B ending of a conducting wire effects electrical resistance.
**R eason ( R ) :** R esistance of a wire depends on resistivity of that material.

1 Both (A) and (R) aretrueand (R) isthecorrect explanation of A.
2 Both (A) and (R) are true but (R) is not the correct explanationof A.
3 (A) istruebut (R) isfalse
4 (A) isfalsebut (R) istrue
Current Electricity

268209 **Assertion (A) :** W hen the radius of a copper wire is doubled, its specific resistance gets increased.
**Reason ( R ):** Specific resistance is independent of cross-section of material used

1 Both (A) and (R) aretrueand (R) isthecorrect explanation of A.
2 Both (A) and (R) are true but (R) is not the correctexplanationof A.
3 (A) istruebut (R) isfalse
4 (A) isfalsebut (R) istrue
Join With Us for More Updates