Physics, 09.09.2021 08:40 lorrainelopez

The e. m.f. of a cell is 4 V. What energy is dissipated by the cell in 20 seconds if a current of 2 amperes flows in the circuit?

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The e. m.f. of a cell is 4 V. What energy is dissipated by the cell in 20 seconds if a current of...