Question

In Ohm’s circuit which of the following does not have +ve and -ve terminals?​

Answer 1

ANSWER
An electric current will not flow if we do not have a power source (a cell, battery or power pack). It also won't flow if the circuit is not complete. One end of the power source must be joined to the other end by the wires and components of the circuit. The small line indicates the negative terminal and the big line indicates the positive terminal. And, the flow of current is towards the negative terminal of the cell or battery. So the direction of the current is from left to right indicated by the arrow mark. That is, from the positive terminal to the negative terminal. The terminals are to be indicated with + and - symbols.
When we have two or more cells connected together we call it a battery. Hence, the terminal of the cells should be connected alternately to form a continuous circuit.
A device called an ammeter is used to measure current. Some types of ammeter have a pointer on a dial, but most have a digital readout. To measure the current flowing through a component in a circuit, we must connect the ammeter in series with it.
Voltage is measured using a voltmeter. Some types of voltmeter have a pointer on a dial, but most have a digital readout. To measure the voltage across a component in a circuit, we must connect the voltmeter in parallel with it.
Hence the circuit diagram is redrawn as follows with the above mentioned considerations.

Answer 2

Answer:

Normally, negative charges—electrons—are the mobile charge in wires, Positive charges are normally stuck in place in solids and cannot move freely. However, because a positive current moving to the right is the same as a negative current of equal magnitude moving to the left,

we define conventional current to flow in the direction that a positive charge would flow if it could move. Thus, unless otherwise specified, an electric current is assumed to be composed of positive charges.

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