The following instruments are available in a laboratory :
(i) Milliammeter `A_1` of range `0.300 mA` and least count `10 mA`
Milliammeter `A_2` of range `0.200 mA` and least count `20 mA`
Voltmeter `V_1` of range `0.3 V` and least count `0.3 V`
Which pair of instruments would be the best choice for carrying out the experiment to determine the equivalent resistance of two resistors connected in series ?

The following pieces of apparatus are available in a laboratory : Battery : adjustable from 0 to 6 V Resistors : 3 Omega and 6 Omega Ammeters : A_1 of range 0 to 5 A , least count 0.25 A A_2 of range 0 to 3 A , least count 0.1 A Voltmeters : V_1 of range 0 to 10 V , least count 0.5 V v_2 of range 0 to 5 V , least count 0.1 V For the experiment to find the equivalent resistance of the parallel combination of the two given resistors, which is the best choice ?

The following apparatus is available in a laboratory : Battery : adjustable from 0 to 4.5 V Resistors : 3 Omega and 6 Omega Ammeters : A_1 of range 0 to 3 A , least count 0.1 A A_2 of range 0 to 1 A , least count 0.05 A Voltmeters : V_1 of range 0 to 10 V , least count 0.5 V V_2 of range 0 to 5 V , least count 0.1 V Which is the best combination of votmeter and ammeter for finding the equivalent resistance of the resistors in series ?

Name the instrument which has the least count 1 mm .

Name the instrument which has the least count 0.1 mm .

Name the instrument which has the least count 0.01 mm.