Question

1. what is the reading of voltmeter?
2 . if this voltmeter is connected across a resistor of 20 ohm ,how much current is flowing through resistor?
plz try give correct answer.
​

Answer 1

Answer:

1. A voltmeter is an instrument that measures the difference in electrical potential between two points in an electric circuit. An analog voltmeter moves a pointer across a scale in proportion to the circuit's voltage; a digital voltmeter provides a numerical display.

voltage measured with "volt" unit

2.  0.05 ampere

Explanation:

2. we know V = IR

so, I = current flow = V/R = V/20 ampere = 0.05 ampere

Answer 2

Explanation:

Least count mtlb min measurement of a particular instrument

[: Jaise scale me min measurement hoti h 1mm

[To scale ka least count hua 1mm: Max reading h 3 volt and no. Of division h 20

[19/10, 9:07 pm] Aakash Sir Physics: So ek division ka reading hoga 3/20 volt Ab reading pata krni h to no. Of division x least count krdo

[ division h and least count 0.15

[ So reading ho jayegi =12*0.15