The Electric Current and Cells: Cells in a Series Circuit

The video explains how potential difference works in series circuits. A single cell provides 1.5 volts, and when two cells are connected in series, the potential difference doubles to 3 volts, making the bulb glow brighter. If cells are placed in opposite directions, the potential difference is zero, and the bulb does not glow. Adding more cells in series increases the potential difference further, potentially causing the bulb to blow out. The current remains consistent throughout the series circuit, even with resistors like bulbs.

What is the potential difference produced by a typical cell?

• 1.5 volts

• 3 volts

• 2 volts

• 0 volts

What happens to the potential difference when two 1.5 Volt cells are connected in series?

• It remains 1.5 volts

• It becomes 0 volts

• It becomes 4.5 volts

• It becomes 3 volts

If two cells are placed with opposite polarities in a series circuit, what will be the total potential difference?

• 4.5 volts

• 0 volts

• 1.5 volts

• 3 volts

What is the effect of adding more cells in series, all oriented in the same direction?

• The potential difference decreases

• The potential difference increases

• The potential difference remains the same

• The circuit stops working

In a series circuit, how does the current behave across different components?

• It varies across components

• It is used up by the first component

• It remains the same across all components

• It doubles at each component