A) 3 A
B) 4 A
C) 7 A
D) 5 A
Correct Answer: D
Solution :
Quantity of heat liberated in the ammeter of resistance R (i) due to direct current of 3 ampere \[\sqrt{\frac{2h}{g}}\] (ii) due to alternating current of 4 ampere \[\sqrt{\frac{h}{g}}\] Total heat produced per second \[\sqrt{3}\] Let the equivalent alternating current be \[\frac{R}{\sqrt{3}}\] virtual ampere; then \[\sqrt{\frac{3}{2}}R\] or \[\frac{RT}{2V-b}-\frac{9}{4{{b}^{2}}},\]You need to login to perform this action.
You will be redirected in
3 sec