The correct option is **C. Induction**. ### Detailed Explanation **What is Induction?** Induction is a process that occurs when a charged object is brought near a neutral conductor, causing a redistribution of charges within the conductor without any physical contact. This phenomenon is based on the principle that like charges repel and opposite charges attract. **Step-by-Step Breakdown:** 1. **Understanding Charge Distribution:** - A neutral conductor has an equal number of positive and negative charges, resulting in no net charge. - When a charged object (say, positively charged) is brought close to the conductor, the electric field created by the charged object influences the charges within the conductor. 2. **Movement of Charges:** - The positive charges in the conductor are attracted towards the negatively charged side of the external object, while the negative charges are repelled away from it. - This results in a separation of charges within the conductor: the side closest to the charged object becomes negatively charged, while the far side becomes positively charged. 3. **Induced Charge:** - The conductor itself remains neutral overall, but it now has a distribution of charges that creates an induced electric field. - If the charged object is removed, the charges in the conductor will redistribute evenly again, returning to a neutral state. 4. **Applications of Induction:** - This principle is used in various applications, such as in capacitors, where charge separation is essential for storing electrical energy, and in induction cooktops, where heat is generated through induced currents. ### Why Other Options Are Incorrect: - **A. Conduction:** - Conduction refers to the transfer of charge through direct contact between materials. In this case, charges move from one object to another through physical contact, which is not what happens in induction. - **B. Polarization:** - Polarization typically refers to the alignment of dipoles in a material or the separation of charges within a molecule or atom. While it involves charge separation, it usually occurs in insulators or dielectrics and does not specifically describe the process of a charged object influencing a conductor without contact. - **D. Radiation:** - Radiation involves the emission of energy in the form of waves or particles, such as electromagnetic radiation. This does not relate to the process of charge separation in conductors due to the influence of a nearby charged object. ### Common Pitfalls: - Confusing induction with conduction: Remember that induction does not require contact, while conduction does. - Misunderstanding polarization: Polarization can occur in dielectrics but does not describe the charge separation in conductors due to an external electric field. ### Revision Summary: - **Induction** is the process of charge separation in a neutral conductor due to the influence of a nearby charged object without contact. - The charged object creates an electric field that causes positive and negative charges to redistribute within the conductor. - Induction is different from conduction (contact-based charge transfer) and polarization (charge alignment in materials). - Understanding these concepts is crucial for grasping electrostatics and its applications in real-world scenarios.