Practice portal › GUJCET › Electromagnetic Induction

Self-Inductance for GUJCET: 25 solved questions

Real GUJCET paper questions on self-inductance, part of electromagnetic induction. Each opens with the options, the correct answer and a step-by-step solution. Papers run from 2007 to 2026. No sign-in needed to read them.

What this topic asks

• Self-inductance and self-induced EMF — 13 questions
• Coil geometry, cores and combinations — 8 questions
• Energy stored in an inductor — 4 questions

All 25 questions with solutions

• A coil of self-inductance 50 mH carries a current of 2 A. The energy stored in joule is GUJCET 2007
• What is the self-inductance of a coil which produces a self-induced emf of 5 V when the current changes from… GUJCET 2007
• A magnetic flux of 10 μWb is linked with a coil when a current of 2 mA flows through it. What is the self-ind… GUJCET 2011
• What is the self-inductance of a solenoid of length 31.4 cm, area of cross-section 10⁻³ m² and total number o… GUJCET 2011
• Select the incorrect unit of self-inductance. GUJCET 2016
• Two inductors, each of inductance L, are connected in parallel. One more inductor of value 5 mH is connected… GUJCET 2018
• Which is not a unit of inductance? GUJCET 2020
• The magnetic field inside a long current-carrying solenoid is 0.6 T. The magnetic energy per unit volume is . GUJCET 2021
• The self-inductance L of a solenoid of length l and area of cross-section A increases if . (The number of tur… GUJCET 2021
• An air-cored solenoid with length 30 cm, area of cross-section 25 cm² and number of turns 500 carries a curre… GUJCET 2022
• A coil has N turns and current passes through it is I ampere then we obtain L Henry of self inductance. Now i… GUJCET 2024
• A coil has N turns and current passes through it is I ampere then we obtain L Henry of self inductance. Now i… GUJCET 2026
• The equivalent inductance of the circuit shown in the figure, between A and B, is . (Neglect any mutual induc… GSEB Board March 2016
• When the electric current in a coil changes from +2 A to -2 A in 0.05 s, an induced emf of 8.0 V is generated… GSEB Board March 2016
• A current of 2 A passing through a coil of 100 turns gives rise to a magnetic flux of 5×10⁻³ Wb per turn. The… GSEB Board July 2016
• The self-inductances of two solenoids A and B of equal length are the same. The numbers of turns in solenoids… GSEB Board July 2017
• Five pure inductors, each of 3 H, are connected as shown in the figure. The equivalent inductance of this con… GSEB Board March 2019
• Which one of the following is an equation of magnetic energy density? GSEB Board March 2020
• T m² A⁻¹ is the unit of the physical quantity. GSEB Board August 2020
• The current in a circuit falls from 5 A to 0 A in 0.1 s. If an average emf of 200 V is induced, the self-indu… GSEB Board March 2022
• A current I passes through an inductor of self-inductance L=4 H. If the current is doubled, what will be the… GSEB Board March 2023
• The current in a circuit falls from 5 A to 0 A in 0.1 s. If an average emf of 200 V is induced, what is the s… GSEB Board July 2023
• When the electric current in a coil steadily changes from +2 A to -2 A in 0.05 s, an induced emf of 8 V is ge… RS Academy GUJCET booklet
• Three pure inductors, each of 3 H, are connected as shown in the figure. The equivalent inductance of this co… RS Academy GUJCET booklet
• The equivalent inductance of two inductors is 2.4 H when they are connected in parallel and 10 H when they ar… RS Academy GUJCET booklet