Current Electricity Charging Discharging Of Capacitors Question 266
Question: In the circuit shown, a meter bridge is in its balanced state. The meter bridge wire has a resistance 0.1 ohm/cm. The value of unknown resistance X and the current drawn from the battery of negligible resistance is
[AMU (Engg.) 2000]
Options:
A) 6 W, 5 amp
B) 10 W, 0.1 amp
C) 4 W, 1.0 amp
D) 12 W, 0.5 amp
Show Answer
Answer:
Correct Answer: C
Solution:
Resistance of the part AC $ R _{AC}=0.1\times 40=4\Omega $ and $ R _{CB}=0.1\times 60=6\Omega $ In balanced condition $ \frac{X}{6}=\frac{4}{6}\Rightarrow X=4\Omega $ Equivalent resistance $ R _{eq}=5\Omega $ so current drawn from battery $ i=\frac{5}{5}=1A $ .
BETA
