Answer to Question #350001 in Electric Circuits for Ayesha

Question #350001

When the direction of current is from negative to positive terminal of the battery then emf (E) is taken as





(a) positive





(b) negative





(c) zero





(d) normal?

1
Expert's answer
2022-06-13T08:24:18-0400

Solution:

The direction electric current in Physics taken in the external circuit: from positive to negative terminals of battery, it is the same with direction of electric field. However electrons move from negative to positive terminals. In the question written: emf (E) is taken as. If here means Electromotive Force (EMF), it is scalar quantity, no direction. In this case we may choose answer d-normal.

However, if in the question talking about current direction inside the battery, it is from negative to positive terminals. So, it is also normal.

Note: please provide more details of question if explanation is not enough.

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