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# Explain and differentiate between e.m.f. of a cell and terminal voltage of a cell .

Asked by Pushpanjali 24th March 2017, 3:40 PM

Hi Abhishek,

When no current is drawn from a cell i.e., when the cell is in open circuit, the potential difference between the terminals of the cell is called its electro-motive force (or e.m.f.).

When current is drawn from a cell, i.e., when the cell is in a closed circuit, the potential difference between the electrodes of the cell is called its terminal voltage.

Hence, we can say that emf is greater than or equal to terminal voltage.

Answered by Expert 24th March 2017, 6:20 PM

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## The rain water from a roof 22 m × 20 m drains into a conical vessel having a base of diameter 2 m and height 3.5 cm. If the vessel is just full, find the rainfall in mm.

Asked by shailesh.solanki 18th March 2018, 7:37 PM

## The rain water from a roof 22 m × 20 m drains into a conical vessel having a base of diameter 2 m and height 3.5 cm. If the vessel is just full, find the rainfall in mm.

Asked by shailesh.solanki 18th March 2018, 7:35 PM

## A wooden toy was made by scooping out a hemisphere of same radius from each end of a solid cylinder. If the height of the cylinder is 10 cm, and its base is of radius 3.5 cm, find the volume of wood in the toy. Use pie=22/7

Asked by shailesh.solanki 18th March 2018, 7:34 PM