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JEE Main 29 June 2022, Shift 1, Physics Q55

Question 55 of 90 in this shift, Physics question 25 of 30, Section B.

The variation of applied potential and current flowing through a given wire is shown in figure. The length of wire is 31.4 cm. The diameter of wire is measured as 2.4 cm. The resistivity of the given wire is measured as

x \times 10^{-3}\ \Omega\ \mathrm{cm}

. The value of

x

is ____________. [Take

\pi = 3.14

]

The figure, in words

Graph of potential (volt) on the y-axis versus I(A) on the x-axis: a straight line from the origin making an angle of 45 degrees with the I axis.

Official answer

144

NTA final key (2022 Session 1).

Chapter: Current Electricity
Topic: Ohm's Law and Resistance
Idea tested: Ohm's Law and V-I Graphs

JEE Main 29 June 2022, Shift 1, Physics Q55

Same idea in other shifts