1
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
A moving coil galvanometer has $$150$$ equal divisions. Its current sensitivity is $$10$$- divisions per milliampere and voltage sensitivity is $$2$$ divisions per millivolt. In order that each division reads $$1$$ volt, the resistance in $$ohms$$ needed to be connected in series with the coil will be -
A
$${10^5}$$
B
$${10^3}$$
C
$$9995$$
D
$$99995$$
2
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
An energy source will supply a constant current into the load if its internal resistance is
A
very large as compared to the load resistance
B
equal to the resistance of the load
C
non-zero but less than the resistance of the load
D
zero
3
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
Out of Syllabus
In a potentiometer experiment the balancing with a cell is at length $$240$$ $$cm.$$ On shunting the cell with a resistance of $$2\Omega ,$$ the balancing length becomes $$120$$ $$cm$$. The internal resistance of the cell is
A
$$0.5\Omega $$
B
$$1\Omega $$
C
$$2\Omega $$
D
$$4\Omega $$
4
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
The resistance of hot tungsten filament is about $$10$$ times the cold resistance. What will be resistance of $$100$$ $$W$$ and $$200$$ $$V$$ lamp when not in use ?
A
$$20\Omega $$
B
$$40\Omega $$
C
$$200\Omega $$
D
$$400\Omega $$
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