If a charged device is to be realized without affecting the external environment, where should the charged device be placed?
A: In a grounded dielectric shell
B: In an ungrounded dielectric shell
C: In a grounded conductor shell
D: In an ungrounded conductor shell
A: In a grounded dielectric shell
B: In an ungrounded dielectric shell
C: In a grounded conductor shell
D: In an ungrounded conductor shell
举一反三
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