To answer this question, we need to understand the properties of each particle listed in the options and how they interact with electric fields.

Option A) Electron - Electrons are negatively charged particles and experience a force when placed in an electric field. The force experienced by an electron is given by the equation F = q * E, where F is the force, q is the charge of the particle, and E is the electric field. Since electrons have a non-zero charge, they experience a non-zero force in an electric field.

Option B) Beta particle - Beta particles are high-energy electrons or positrons. Like electrons, beta particles have a non-zero charge and will experience a force in an electric field. Therefore, they are not the correct answer.

Option C) Gamma ray - Gamma rays are a form of electromagnetic radiation. Unlike charged particles, gamma rays are neutral and do not carry a charge. Since they have no charge, gamma rays do not experience any electrical force in an electric field. Therefore, they experience the least electrical force among the given options.

Option D) Alpha particle - Alpha particles are positively charged particles consisting of two protons and two neutrons. Like electrons and beta particles, alpha particles have a non-zero charge and will experience a force in an electric field. Therefore, they are not the correct answer.

The correct answer is C) Gamma ray. Gamma rays, being neutral, do not experience any electrical force in an electric field.

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