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Electric Charge and Coulomb's Law for GUJCET: 14 solved questions

Real GUJCET paper questions on electric charge and coulomb's law, part of electric charge and properties. Each opens with the options, the correct answer and a step-by-step solution. Papers run from 2008 to 2023. No sign-in needed to read them.

What this topic asks

• Coulomb's law and superposition — 6 questions
• Equilibrium and small oscillations — 3 questions
• Properties of charge — 2 questions
• Charge sharing between conductors — 2 questions
• Units and dimensions — 1 question

All 14 questions with solutions

• The electrical force between two point charges is 200 N. If one charge is increased by 10% and the other is d… GUJCET 2008
• If the Coulomb force acting between two protons separated by a distance r is F, what would be the force actin… GUJCET 2009
• If F is the force between two point charges submerged in a medium of dielectric constant K, then on withdrawi… GUJCET 2013
• Two spheres having the same radius and mass are suspended by two strings of equal length from the same point,… GUJCET 2014
• When 10¹⁹ electrons are removed from a neutral metal plate through some process, the charge on it becomes _. GUJCET 2015
• The repulsive force between two particles of the same mass and charge, separated by a certain distance, is eq… GUJCET 2016
• Three identical charges q₁, q₂ and q₃ are placed, in that order, on three consecutive vertices of a square. I… GUJCET 2018
• A polythene piece rubbed with wool is found to have a negative charge of 3.52×10⁻⁷ C. What is the number of e… GUJCET 2023
• The force acting between two point charges kept at a certain distance is F. Now the magnitudes of the charges… RS Academy GUJCET booklet
• The distance between two point charges 4q and -q is r. A third charge Q is placed at their midpoint. If the r… RS Academy GUJCET booklet
• Two identical metal spheres A and B carry the same charge q. When they are a distance r apart, the force acti… RS Academy GUJCET booklet
• Two spheres carrying charge q each hang from the same point of suspension by threads of length 1 m, in a spac… RS Academy GUJCET booklet
• Two identical spheres carrying charges 2Q and -Q are placed at a certain distance, and the force acting betwe… RS Academy GUJCET booklet
• The dimensional formula of k (Coulomb's constant) is . Take I as the dimension of current. GUJCET 2016