Copper of fixed volume ‘V’ is drawn into wire of length ‘l’. When this wire is subjected to a constant force ‘F’, the extension produced in the wire is ′Δl′. Which of the following graph is a straight line? Copper of fixed volume 'V' is drawn into wire of length 'l'. When this wire is subjected to a constant force 'F' the extension produced in the wire is ′Δl′. Which of the following graph is a straight line? August 29, 2020 Category: Chapter 14 - Solid Mechanics , NEET Last 32 Years Solved 1988 - 2019 Physics and Chemistry Video Solutions , Physics , Facebook Messenger WhatsApp Share this:TwitterFacebook Related A copper wire and a steel wire oif the same cross sectional area annd length are joined end to end . Equal and opposite longitudinal forc es are applied to the free ends giving a total elonganation of l. Then the two eires will haveA copper wire of length (l) and radius(r) is nickel plated till its final radius is (R) and length(l). If the specific resistance of nickel and copper be kn and kc , the conductance of nickelled wire is?A copper rod length 19 m is moving with uniform velocity 10 m/s parallel to a long straight wire carring a current of 5 A.the rod is perpendicular to the wire with its ends at distances 0.01 and 0.2 m from it. calculate the emf induced in the rod.