1
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
A parallel plate capacitor of capacitance 20 $$\mu $$F is being charged by a voltage source whose potential is changing at the rate of 3V/s. The conduction current through the connecting wires, and the displacement current through the plates of the capacitor, would be, respectively :
A
zero, zero
B
zero, 60 $$\mu $$A
C
60 $$\mu $$A, 60 $$\mu $$A
D
60 $$\mu $$A, zero
2
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
In which of the following devices, the eddy current effect is not used?
A
magnetic braking in train
B
electromagnet
C
electric heater
D
induction furnace
3
NEET 2019
MCQ (Single Correct Answer)
+4
-1
Change Language
The displacement of a particle executing simple harmonic motion is given by

y = A0 + A sin$$\omega $$t + B cos$$\omega $$t.

Then the amplitude of its oscillation is given by :
A
$$\sqrt {{A^2} + {B^2}} $$
B
A + B
C
A + $$\sqrt {{A^2} + {B^2}} $$
D
$$\sqrt {A_0^2 + {{\left( {A + B} \right)}^2}} $$