Question

No current flows between two charged bodies connected together when they have the same:
(a) Charge
(b) Potential
(c) Capacitance
(d) Resistance

Answer 1

Hint: We will use the definitions of every option to answer the question. Also, with the help of the formula of potential difference is needed to find the flow of current between the two charged bodies which are connected together.

Formula used:
V = IR where, V is the potential difference, I is the current and R is the resistance of any substance.

Complete step by step answer:

Electric Current: When the electric charge passes through a substance, with an area of cross-section of that substance, in time t then, we say that there is an electric current in a substance. We always measure electric current in ampere.
Electric charge: It is a type of a basic property of any matter around us that carries some elementary particles along with them. These charges can be a positive charge or a negative charge which can neither be created nor destroyed by anything. Rather the charge can be transferred from one object to another.
Electric Potential: By the term potential we mean, the amount of energy or the work done that is needed by any substance to flow a charge of 1 unit from one point to another. We can measure the potential in volts only.
Capacitance: This is a kind of a property that is valid on a conductor and not on insulators or semiconductors. It is a charge or an electric charge that can be carried by a 1 unit of volts by a conductor. We should always measure capacitance in Farads.
Resistance: This is basically the opposition of any substance which is applied by the substance to the electric current. The resistance of any substance is in ohms.
For the flow of electric current in any substance, there must be the presence of two different potentials in that substance. This is because the tendency of the flow of electric charge is from higher potential to the lower potential. Since, the question is about zero flow of charges, this can only happen if there is no higher potential as well as a slower potential in the substance.
As we know that the potential is measured as V = IR so we will find that the potential will be zero for no charge because I = 0. Therefore, there is no flow of electric charges even between two charged particles due to the presence of the same potential in them.

So, the correct answer is “Option B”.

Note:
The things to be on your finger tips for further questions like this are,
(1) The definition and SI unit of electric charge: ampere (A).
(2) The definition and SI unit of electric potential: Volts (V).
(3) The definition and SI unit of capacitance: Farads (F).
(4) The definition and SI unit of resistance: ohms ($\Omega $).