1
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
$$400\Omega $$
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
Two concentric coils each of radius equal to $$2$$ $$\pi $$ $$cm$$ are placed at right angles to each other. $$3$$ ampere and $$4$$ ampere are the currents flowing in each coil respectively . The magnetic induction in Weber / $${m^2}$$ at the center of the coils will be
$$\left( {\mu = 4\pi \times {{10}^{ - 7}}Wb/A.m} \right)$$
A
$${10^{ - 5}}$$
B
$$12 \times {10^{ - 5}}$$
C
$$7 \times {10^{ - 5}}$$
D
$$5 \times {10^{ - 5}}$$
4
AIEEE 2005
MCQ (Single Correct Answer)
+4
-1
A magnetic needle is kept in a non-uniform magnetic field. It experiences :
A
neither a force nor a torque
B
a torque but not a force
C
a force but not a torque
D
a force and a torque
JEE Main Papers
2023
2021
EXAM MAP