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AC Generator for JEE: 11 solved questions

Real JEE paper questions on ac generator, part of electromagnetic induction. Each opens with the options, the correct answer and a step-by-step solution. Papers run from 2004 to 2026. No sign-in needed to read them.

What this topic asks

• Peak and instantaneous EMF — 7 questions
• Orientation and power of a rotating loop — 4 questions

All 11 questions with solutions

• A conducting circular loop is rotated about its diameter at a constant angular speed of 100 rad/s in a magnet… JEE Main 22nd Jan 2nd Shift 2026
• A square shaped coil of area 70 cm² having 600 turns rotates in a magnetic field of 0.4 Wb m⁻², about an axis… JEE Main 1st Feb 2nd Shift 2023
• A coil of cross-sectional area A having n turns is placed in a uniform magnetic field B. When it is rotated w… JEE Main Online 2018
• A coil of 200 turns and area 0.20 m² is rotated at half a revolution per second and is placed in a uniform ma… JEE Main 1st Feb 2nd Shift 2024
• A circular coil of 1000 turns each with area 1 m² is rotated about its vertical diameter at the rate of one r… JEE Main 24th June 2nd Shift 2022
• A circular coil of radius 8.0 cm and 20 turns is rotated about its vertical diameter with an angular speed of… JEE Main 26th Aug 2nd Shift 2021
• A circular coil of radius 10 cm is placed in a uniform magnetic field of 3.0 × 10⁻⁵ T with its plane perpendi… JEE Main 2nd Sept 1st Shift 2020
• A coil of area A and N turns is rotating with angular velocity ω in a uniform magnetic field B about an axis… JEE Main 29th Jan 1st Shift 2025
• A planar loop of wire rotates in a uniform magnetic field. Initially, at t = 0, the plane of the loop is perp… JEE Main 7th Jan 2nd Shift 2020
• An elliptical loop having resistance R, of semi-major axis a and semi-minor axis b, is placed in a magnetic f… JEE Main 3rd Sept 1st Shift 2020
• In a uniform magnetic field of induction B, a wire in the form of a semicircle of radius r rotates about the… JEE Main 2004