Question

the current flowing through a resistor connected in an electrical circuit and the potential difference developed across its ends as shown in the given ammeter and voltmeter Find the least count of the voltmeter ammeter what is the voltage and current across the human register

Answer 1

Least Count = $\frac{Range}{No. of divisions}$

current = 0.3 A

potential difference = 2.0 V

Answer 2

The least count is 0.01 mm .the least count is the smallest deflection on the ammeter reading or the voltmeter .an ammeter is an instrument used o measure the current hence a change in current affects the magnetic field .it measures small quantities of current in amperes metres

A resistor is used to control the current flowing through electric circuit