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 2019
MCQ (Single Correct Answer)
+1
-0

In a cyclotron a charged particle

A
undergoes acceleration all the time
B
speeds up between the dees because of the magnetic field
C
speeds up in dee
D
slows down within a dee and speeds up between dees
2
KCET 2019
MCQ (Single Correct Answer)
+1
-0

The number of turns in a coil of galvanometer is tripled, then

A
voltage sensitivity increases 3 times and current sensitivity remains constant
B
voltage sensitivity remains constant and current sensitivity increases 3 times
C
both voltage and current sensitivity remains constant
D
both voltage and current sensitivity decreases by $$33 \%$$
3
KCET 2019
MCQ (Single Correct Answer)
+1
-0

Coersivity of a magnet where the ferromagnet gets completely demagnetized is $$3 \times 10^3 \mathrm{~Am}^{-1}$$. The minimum current required to be passes in a solenoid having 1000 turns per metre, so that the magnet gets completely demagnetized when placed inside the solenoid is

A
30 mA
B
60 mA
C
3 A
D
6 A
4
KCET 2019
MCQ (Single Correct Answer)
+1
-0

The magnetic fields at the centre O in the given figure is

KCET 2019 Physics - Moving Charges and Magnetism Question 19 English

A
$$\frac{7}{14} \frac{\mu_0 I}{R}$$
B
$$\frac{5}{12} \frac{\mu_0 I}{R}$$
C
$$\frac{3}{10} \frac{\mu_0 I}{R}$$
D
$$\frac{\mu_0 I}{12 R}$$
KCET Subjects