JEE MainPhysicsCurrent ElectricityMCQ+4 / −1
An aluminium wire is stretched to make its length, 0.4% larger. The percentage change in resistance is :
- A0.4%
- B0.2%
- C0.8%
- D0.6%
More from Current Electricity
- The equivalent resistance between points A and B in the given network is : Includes diagram2022 · MCQ
- Two sources of equal emfs are connected in series. This combination is connected to an external resistance R. The internal resistances of the two sources are and . If the potential difference…2022 · MCQ
- In a meter bridge experiment, for measuring unknown resistance 'S', the null point is obtained at a distance from the left side as shown at point D. If R is , then the value of unknown resistance 'S'… Includes diagram2022 · Numerical
- A long copper wire carries a current of . If the cross section of the wire is and the resistivity of copper is , the force experienced by moving…2022 · Numerical
- (A) The drift velocity of electrons decreases with the increase in the temperature of conductor. (B) The drift velocity is inversely proportional to the area of cross-section of given conductor. (C) The drift velocity does not depend on…2022 · MCQ
- In the given figure of meter bridge experiment, the balancing length AC corresponding to null deflection of the galvanometer is . The balancing length, if the radius of the wire is doubled, will be … Includes diagram2022 · Numerical
- A 72 galvanometer is shunted by a resistance of 8 . The percentage of the total current which passes through the galvanometer is :2022 · MCQ
- The current density in a cylindrical wire of radius 4 mm is 4 106 Am 2. The current through the outer portion of the wire between radial distances and R is A.2022 · Numerical