Current Electricity Charging Discharging Of Capacitors Question 271
Question: An ammeter gives full deflection when a current of 2 amp. flows through it. The resistance of ammeter is 12 ohms. If the same ammeter is to be used for measuring a maximum current of 5 amp., then the ammeter must be connected with a resistance of
[MP PET 2001]
Options:
A) 8 ohms in series
B) 18 ohms in series
C) 8 ohms in parallel
D) 18 ohms in parallel
Show Answer
Answer:
Correct Answer: C
Solution:
$ \frac{i}{i _{g}}=1+\frac{G}{S} $
$ \Rightarrow ,\frac{5}{2}=1+\frac{12}{S}\Rightarrow S=8\Omega . $ (In parallel).
BETA
