Question

What cause current to flow potential difference or emf

Answer 1

Answer:

A few voltage sources are shown in. All such devices create a potential difference and can supply current if connected to a resistance. On the small scale, the potential difference creates an electric field that exerts force on charges, causing current. We thus use the name electromotive force, abbreviated emf.

Emf is not a force at all; it is a special type of potential difference. To be precise, the electromotive force (emf) is the potential difference of a source when no current is flowing. Units of emf are volts.

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Answer 2

Explanation:

Due to difference in potential difference across the circuit allow the current flow in circuit .

NOTE :

If there is no difference in P.D then current dose not flow.

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