Which method of charge transfer requires no direct contact?

Which method of charge transfer requires no direct contact?

• A. Charging by Conduction
• B. Static Electricity
• C. Charging by Induction
• D. Charging by Friction

Answer: (C)

Induction is the process that transfers charge without touching the object doing the charging. When a charged object is brought near a neutral conductor, the free charges inside the conductor rearrange in response to the external field: charges of the same sign are repelled to the far side, while opposite charges accumulate on the near surface. If you briefly connect the conductor to the ground, electrons can flow to or from the earth, allowing a net transfer of charge. After removing the ground and then the external charge, the conductor ends up with a net charge, all without any direct contact between the charged object and the conductor. This distinguishes it from charging by conduction, which requires contact; charging by friction involves rubbing to transfer electrons; static electricity describes electrostatic phenomena but is not itself a transfer method.

Induction is the process that transfers charge without touching the object doing the charging. When a charged object is brought near a neutral conductor, the free charges inside the conductor rearrange in response to the external field: charges of the same sign are repelled to the far side, while opposite charges accumulate on the near surface. If you briefly connect the conductor to the ground, electrons can flow to or from the earth, allowing a net transfer of charge. After removing the ground and then the external charge, the conductor ends up with a net charge, all without any direct contact between the charged object and the conductor. This distinguishes it from charging by conduction, which requires contact; charging by friction involves rubbing to transfer electrons; static electricity describes electrostatic phenomena but is not itself a transfer method.