Electronics - Voltage and Current - Discussion

@Somveer,

Nice question : I think we should increase the resistance of ammeter. Here galvano and ammeter use for measure current, but galvano can do one more good thing, this is, it can also show the direction of the current AC.

To convert a galvanometer into ammeter or voltmeter what we do?

No voltmeter connect in series. That's right.

What if the voltmeter is connected in series?

Voltage (Electrical potential) is an electrical force applied to move a charge from one point (A) to another point (B). ie) Work done (Joules).

At point A high is available and in moving the charge to point B as work is done some potential is consumed. Hence potential at B will be less than at A. Hence a potential difference between points A &B.

A voltmeter is used to measure the potential difference between two points. Any measurement of difference is wrt to a reference point. Hence, a voltmeter is connected across (Parallel) two points.

In series what will be divide current or voltage please give me answer.

Yes it can be in parallel with the circuit.

Because voltages divide in parallel and current remains same as opposite in series.

Voltmeter range can be extended by connecting a high resistance in series so that that will acts as multiplier.

Ammeter range can be extended by connecting more and more shunt resistances.

Voltage is nothing but potential difference between two points. There fore it is measured across the end points of a component.