Mechanics
Units & Measurement and Dimensions
MCQ (Single Correct Answer)
Motion in a Straight Line
MCQ (Single Correct Answer)
Work, Energy and Power
MCQ (Single Correct Answer)
Center of Mass and Collision
MCQ (Single Correct Answer)
Simple Harmonic Motion
MCQ (Single Correct Answer)
Heat and Thermodynamics
MCQ (Single Correct Answer)
Electromagnetism
Current Electricity
MCQ (Single Correct Answer)
Moving Charges and Magnetism
MCQ (Single Correct Answer)
Magnetism and Matter
MCQ (Single Correct Answer)
Electromagnetic Induction
MCQ (Single Correct Answer)
Alternating Current
MCQ (Single Correct Answer)
Electromagnetic Waves
MCQ (Single Correct Answer)
Modern Physics
Dual Nature of Radiation
MCQ (Single Correct Answer)
Semiconductor Devices and Logic Gates
MCQ (Single Correct Answer)
Communication Systems
MCQ (Single Correct Answer)
1
KCET 2017
MCQ (Single Correct Answer)
+1
-0

In the A.C. circuit shown, keeping ' $K$ ' pressed, if an iron rod inserted into the coil, the bulb in the circuit,

KCET 2017 Physics - Alternating Current Question 4 English
A
glows less brightly
B
glows with same brightness (as before the rod is inserted)
C
gets damaged
D
glows more brightly
2
KCET 2017
MCQ (Single Correct Answer)
+1
-0
The output of a step down transformers is measured to be 48 V when connected to a 12 W bulb. The value of peak current is
A
$\frac{1}{\sqrt{2}} \mathrm{~A}$
B
$\sqrt{2} \mathrm{~A}$
C
$\frac{1}{2 \sqrt{2}} \mathrm{~A}$
D
$\frac{1}{4} \mathrm{~A}$
KCET Subjects