Question

The measurement of volt meter in the following circuit is
1 ) 2.25 v
2 ) 4.25 v
3) 3.25 v
4) 6.25 V​

Answer 1

Answer:

Resistance of voltmeter and 60Ω are in parallel.

∴ Equivalent resistance

=

60+40

60×40

=

100

60×40

=24Ω

For the whole circuit,

current I=

(40+24)Ω

6V

=

64

6

=

32

3

A

The voltmeter reads potential difference across 60Ω.

∴ Voltmeter reading =I×R

eq

=

32

3

×24=

4

9

V=2.25 V.

Answer 2

Answer:

2.25v

Explanation:

Resistance of voltmeter and 60Ω are in parallel.

∴ Equivalent resistance

=  

60+40

60×40

​  

=  

100

60×40

​  

=24Ω

For the whole circuit,

current I=  

(40+24)Ω

6V

​  

=  

64

6

​  

=  

32

3

​  

A

The voltmeter reads potential difference across 60Ω.

∴ Voltmeter reading =I×R  

eq

​  

 

=  

32

3

​  

×24=  

4

9

​  

V=2.25 V.