In the circuit figure, the voltmeter reads 30 V. what is the resistance of the voltmeter?
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a)
b)
c)
d)
a)
b)
c)
d)
Question ID - 151399 | SaraNextGen Top Answer In the circuit figure, the voltmeter reads 30 V. what is the resistance of the voltmeter?
a)
b)
c)
d)
In the circuit figure, the voltmeter reads 30 V. what is the resistance of the voltmeter?
|
a) |
|
b) |
|
c) |
|
d) |
|
1 Answer
127 votes
Answer Key / Explanation : (a) -
|
(a) The potential difference across or |
Therefore the effective resistance of voltmeter resistance 
and 
in parallel will be equal to 
, as 60 V is equally divided between two parts. So 300
127 votes
Answer Link
127