Galvanometer

Question 1

What is a galvanometer (shunt)

Answer 1

Can be modified to work as an ammeter by connecting a resistor of low value in parallel across its terminals, this arrangement is called a shunt

Question 2

What happens at the junction

Answer 2

the large current splits, most of it goes through the shunt where that value of current can be calculated, leaving a much smaller current to pass through the galvanometer safely

Question 3

A galvanometer can be used as

Answer 3

A voltmeter by connecting a resistor of high value in series. Since volt meters have high resistances, this arrangement will work in a similar fashion

Question 4

What is the resistor called in the voltmeter

Answer 4

Multiplier which is connected in parallel across terminals of the device whose p.d is being measured. Most of the current passes through the device

Question 5

The current in the multiplier=

Answer 5

current through the galvanometer and thus voltage can be calculated