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Wires in Series, Parallel and Tapering for JEE: 12 solved questions

Real JEE paper questions on wires in series, parallel and tapering, part of mechanical properties of solids. Each opens with the options, the correct answer and a step-by-step solution. Papers run from 2013 to 2026. No sign-in needed to read them.

What this topic asks

• Series and parallel wires — 8 questions
• Self-weight and tapering — 4 questions

All 12 questions with solutions

• A uniform heavy rod of weight 10 N, cross-sectional area 100 cm² and length 20 cm is hanging from a fixed sup… JEE Main 31st Aug 1st Shift 2021
• A uniformly tapering conical wire is made from a material of Young's modulus Y and has a normal, unextended l… JEE Main Online 2016
• A uniform wire of length l and weight w is suspended from the roof with a weight W at the other end. The stre… JEE Main 2nd April 1st Shift 2026
• A uniform heavy rod of mass 20 kg, cross-sectional area 0.4 m² and length 20 m is hanging from a fixed suppor… JEE Main 26th July 2nd Shift 2022
• A string A of length 0.314 m and Young's modulus 2×10¹⁰ N m⁻² is connected to another string B whose length a… JEE Main 4th April 1st Shift 2026
• A metal string A is suspended from a rigid support and its free end is attached to a block of mass M. A secon… JEE Main 4th April 2nd Shift 2026
• Two wires A and B of equal cross-section but of different materials are joined end to end. The ratio of the Y… JEE Main 6th April 1st Shift 2026
• A steel wire of length 3.2 m (Yₛ=2.0×10¹¹ N m⁻²) and a copper wire of length 4.4 m (Y_c=1.1×10¹¹ N m⁻²), both… JEE Main 27th July 2nd Shift 2022
• Two wires of the same length and radius are joined end to end and loaded. The Young's moduli of the materials… JEE Main 25th July 1st Shift 2021
• If the ratios of the lengths, radii and Young's moduli of the steel and brass wires in the figure are a, b an… JEE Main Online 2013
• One end of a metal wire is fixed to a ceiling and a load of 2 kg hangs from the other end. A similar wire is… JEE Main 1st Feb 2nd Shift 2024
• Two wires, each of radius 0.2 cm and negligible mass, one made of steel and the other made of brass, are load… JEE Main 10th April 1st Shift 2023