Current Electricity and Electrical InstrumentHard
Question
In which one of the following arrangements of resistors does the ammeter M, which has a resistance of, give the largest reading when the same potential difference is applied between points P and R ?
Options
A.
B.
C.
D.
Solution
Let VPQ = E
For (A) : I =
For (B) : I =
For (C) : I =
For (D) : I =
For (A) : I =
For (B) : I =
For (C) : I =
For (D) : I =
Create a free account to view solution
View Solution FreeTopic: Current Electricity and Electrical Instrument·Practice all Current Electricity and Electrical Instrument questions
More Current Electricity and Electrical Instrument Questions
In a large building, there are 15 bulbs of 40 W, 5 bulbs of 100 W, 5 fans of 80 W and 1 heater of 1 kW. The voltage of t...Current sensitivity of a moving coil galvanometer is 5 div/mA and its voltage sensitivity (angular deflection per unit v...A small coil lies inside a larger coil. The two coils are horizontal, concentric and carry currents in the same directio...Three copper wires of lengths and cross sectional areasare (l,A), (2l,A/2) and(l/ 2,2A). Resistance is minimum in...A npn transistor is connected in common emitter configuration in a given amplifier. A load resistance of800 Ω is co...