Question

What happens when a negative terminal of a cell is connected to another negative terminal of a cell in a particular circuit?
(A) Current will not flow in circuit
(B) Current will flow in circuit
(C) Temperature of cell will increase
(D) Cell gets damaged

Answer 1

We know that current will flow through a circuit when there is a potential difference between the terminals of the cell, that is one terminal should be at higher potential as compared to other terminals. When current flows through the conductor the temperature rises.

Complete step by step answer:
According to the given statement, when a negative terminal of a cell is connected to another negative terminal of a cell in a particular circuit then what will happen to the circuit.
We know current means the flow of electrons and these electrons are negatively charged so they are attracted to the positive end of the cell and repelled by the negative end of the cell.
Now when a cell is connected in a circuit that lets the electron flow through the circuit then electrons will flow from negative to positive terminal. As per the problem if the negative terminal of the cell is connected to another negative terminal of the cell in a particular circuit then it will not allow the current to flow through it as electrons cannot flow from negative to negative terminal. Another reason for this is that a potential difference is required for the current to flow through the circuit.
Therefore the correct option is (A).

Note: Remember that in case of open circuit also current does not flow as it has a high resistance between two points. Hence current or charge flow depends on the resistance and potential between the two points which is also stated by the ohm’s law. Another point until and unless no charge flows through a conductor its temperature remains the same.