1
KCET 2026
MCQ (Single Correct Answer)
+1
-0
What will be the total electric flux through the faces of the cube as given in the figure with side of length '$a$' if a charge Q is placed at B midpoint of an edge of the cube (see figure)?
A
$\dfrac{Q}{8\varepsilon_0}$
B
$\dfrac{Q}{3\varepsilon_0}$
C
$\dfrac{Q}{4\varepsilon_0}$
D
$\dfrac{Q}{2\varepsilon_0}$
2
KCET 2026
MCQ (Single Correct Answer)
+1
-0
An electron falls through a distance $1.5$ cm in $2.0 \times 10^4$ N/C from rest. The time taken to cover this distance in second is ____
$(e = 1.6 \times 10^{-19}\text{ C}, m_e = 9.11 \times 10^{-31}\text{ kg})$
A
$2.9 \times 10^{-9}$
B
$2.9 \times 10^{9}$
C
$4 \times 10^{-6}$
D
$4 \times 10^{6}$
3
KCET 2026
MCQ (Single Correct Answer)
+1
-0
A point charge is placed in a moving train. A passenger A sitting in the train and person B on the ground observe the fields due to this charge. Then
A
A observes both electric and magnetic fields
B
B observes both electric and magnetic fields
C
A observes only magnetic field
D
B observes only electric field
4
KCET 2026
MCQ (Single Correct Answer)
+1
-0
In the circuit shown in the figure, the potential difference across the $4 \mu\text{F}$ capacitor is
A
$3$ V
B
$4$ V
C
$9$ V
D
$12$ V