Current Electricity Charging Discharging Of Capacitors Question 316
Question: If resistance of voltmeter is 10000W and resistance of ammeter is 2W then find R when voltmeter reads 12V and ammeter reads 0.1 A
[BCECE 2005]
Options:
A) 118 W
B) 120 W
C) 124 W
D) 114W
Show Answer
Answer:
Correct Answer: A
Solution:
According to following figure Reading of voltmeter = Potential difference between A and B = i (R + 2)
Therefore 12 = 0.1 (R + 2)
Therefore R = 118 W.
BETA
