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Question
In which of the following cases, an electric current flows through a conductor?
In which of the following cases, an electric current flows through a conductor?
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Solution
The correct options are
B When a battery is connected to it in a closed circuit
D When a potential difference is applied accross it in a closed circuit
When a potential difference is applied across the ends of the conductor, then electrons tend to flow through it which constitutes an electric current. This is achieved only when the electrical circuit is closed. The battery is a device which helps in applying the potential difference across the ends of a conductor.
B When a battery is connected to it in a closed circuit
D When a potential difference is applied accross it in a closed circuit
When a potential difference is applied across the ends of the conductor, then electrons tend to flow through it which constitutes an electric current. This is achieved only when the electrical circuit is closed. The battery is a device which helps in applying the potential difference across the ends of a conductor.
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