If the **voltmeter** has a very high **resistance**, it will draw a very small amount of **current** from the source and the load **current** will be pretty much the same as without the **voltmeter**. The actual **voltage** across the load is 83.33V, but a lower **resistance voltmeter** will erroneously read it as 71.428V.

People also ask should a **voltmeter** have a high or low **resistance**?

On the other hand, a **voltmeter** measures the **voltage** difference between two different points (e.g. on different sides of a resistor), but it should not change the amount of **current** flowing through the element between those two points. So it should have a very high **resistance** so it doesn’t “draw” any **current**.

One might also ask which **voltmeter** or galvanometer has a higher **resistance**? An ideal **ammeter** has no **resistance** and an ideal **voltmeter** has infinite **resistance**. Think for a moment how they are typically used to measure the **current** and **voltage** in a **circuit**.

Also why does an **ammeter** have a low **resistance** and a **voltmeter** have a high **resistance**?

Ammeter has a low **resistance** because it is an instrument that measures the electrical **current** in amperes in a branch of a **circuit**. It must be connected in series with the branch to be measured and must have a very low **resistance** to avoid a significant change in the **current** to be measured. So it should have a high **resistance**.

What is the ideal **resistance** of a **voltmeter**?

Answer: The internal **resistance** of an ideal **voltmeter** is infinite and the internal **resistance** of an ideal **ammeter** is zero. Ammeter is connected in series and **voltmeter** in parallel with electrical appliance.

## Should the resistance of an ammeter be high or low?

The **resistance** of an **ammeter** should be low. To measure **current**, an **ammeter** must be connected in series with the **circuit**. If its **resistance** is not very low, its inclusion in the **circuit** will reduce the **current** to be measured. In fact, an ideal **ammeter** is one that has no **resistance**.

## What is Ohm’s law in electricity?

Ohm’s law states that the electric **current** (I) flowing in The **current** flowing in a **circuit** is proportional to **voltage** (V) and inversely proportional to **resistance** (R). Therefore, if the **voltage** is increased, the **current** will increase, provided the **circuit resistance** does not change.

## How should a voltmeter be connected in a circuit?

An **ammeter** is a measuring device for measuring the electric **current** in a **circuit**. A **voltmeter** is placed in parallel with a device to measure its **voltage**, while an **ammeter** is placed in series with a device to measure its **current**.

## What is the term for inverse of resistance?

The reciprocal of **resistance**, i.e. **current** divided by **voltage**, is conductance. The symbol is G and the units are mhos (ohms written backwards) or siemens.

## Why do we connect a voltmeter in parallel?

A **voltmeter** has a very high **resistance** to ensure this Its connection does not change the **current** flow in the **circuit**. Now when it is connected in series, no **current** will flow in the **circuit** due to its high **resistance**. Therefore it is connected in parallel to the load where the potential difference is to be measured.

## Why does a voltmeter have infinite resistance?

Would it stop the flow of **current** in the whole **circuit** because of its high **resistance**? The ideal **voltmeter** has infinite **resistance**, so no **current** flows. For this reason, voltmeters are connected in parallel with the **circuit**, not in series. However, an **ammeter** is connected in series and has a low **resistance**.

## Which meter has the greatest resistance and why?

Voltmeter

## What does **voltage** mean?

Voltage, also called electromotive force, is a quantitative expression of the potential charge difference between two points in an electric field. The **voltage** can be the same or alternating. A DC **voltage** always maintains the same polarity.

## What happens when a **voltmeter** is connected in series?

The series connection of a **voltmeter** is equivalent to putting a very high **resistance** in series with the **circuit**. This causes only an insignificant **current** to flow through the **circuit**, almost resulting in an open **circuit**.

## What **resistance** should an **ammeter** have?

The **resistance** of an **ammeter** should be low. It should be as close to zero as possible. Ideally it should be zero ohms. If it is non-zero and significant, it will affect the actual **current**.

## What is the unit of the galvanometer?

The figure of merit is the amount of **current** that has passed in the unit of deflection in a galvanometer. Its SI unit is amperes per division.

## How do I calculate **resistance**?

If you know the total **current** and **voltage** across the entire **circuit**, you can find the total **resistance** in ohms by law : R = V / I. For example, a parallel **circuit** has a **voltage** of 9 volts and a total **current** of 3 amps. The total **resistance** R_{T}= 9 volts / 3 amps = 3 Ω.

## Why should an **ammeter** have a low **resistance**?

The reason for the **ammeter** Resistance is too low because it can accurately read the **current** flowing in the **circuit**. When the **resistance** of the **ammeter** is low, almost all of the **current** in the **circuit** can flow through the **ammeter**. This is because in this case the **ammeter** itself would oppose the **current** flow.

## Does an **ammeter** have a **resistance**?

Just like voltmeters, ammeters tend to affect the amount of **current** coming in the circuits to which they are connected. However, unlike the ideal **voltmeter**, the ideal **ammeter** has no internal **resistance** in order to drop as little **voltage** as possible when **current** flows through it.

## What makes something a series **circuit**?

A series **circuit** is a closed **circuit** in which the **current** follows one path, as opposed to a parallel **circuit** where the **circuit** is divided into two or more paths. In a series **circuit**, the **current** through each load is the same and the total **voltage** across the **circuit** is the sum of the voltages across each load.

## Should an **ammeter** have a high **resistance**?

If the **resistance** of the **ammeter** is low, almost all of the **current** in the **circuit** can flow through the **ammeter**. An ideal **ammeter** should ideally have no **resistance**. So it should be connected in parallel and have a very high **resistance** so it doesn’t “draw” **current**.

## How does a **voltmeter** measure **resistance**?

The basic idea is that the multimeter measures a **voltage** is applied to the two probes and this causes a **current** to flow in the object for which the **resistance** is being measured. By measuring the **resistance** it is possible to determine the **resistance** between the two probes of the multimeter or other testing device.