Current Electricity Charging Discharging Of Capacitors Question 218
Question: In the diagram shown, the reading of voltmeter is 20 V and that of ammeter is 4 A. The value of R should be (Consider given ammeter and voltmeter are not ideal)
[RPMT 1997]
Options:
A) Equal to $ 5,\Omega $
B) Greater from $ 5,\Omega $
C) Less than $ 5,\Omega $
D) Greater or less than $ 5,\Omega $ depends on the material of R
Show Answer
Answer:
Correct Answer: C
Solution:
If resistance of ammeter is r then $ 20=(R+r)4 $
Therefore $ R+r=5 $
Therefore $ R<5,\Omega $
BETA
