1
KCET 2026
MCQ (Single Correct Answer)
+1
-0
Current flowing through a wire decreases linearly from $10$ A to zero in $4$ s as shown in the graph. Find the total charge flowing through the wire in the given time interval.
A
$40$ C
B
$20$ C
C
$10$ C
D
$80$ C
2
KCET 2026
MCQ (Single Correct Answer)
+1
-0
Given below are two statements:
Statement-I: The resistivity of a conductor is independent of its temperature.
Statement-II: The resistivity of a semiconductor decreases with increase in temperature.
Select the correct option.
A
Both Statement I and Statement II are false
B
Both Statement I and Statement II are true
C
Statement I is true but Statement II is false
D
Statement I is false but Statement II is true
3
KCET 2026
MCQ (Single Correct Answer)
+1
-0
The number of electrons moving per second through the filament of a lamp of $60$ W operating at $120$ V is nearly $(e = 1.6 \times 10^{-19}\text{ C})$ _____________.
A
$6.2 \times 10^{18}$
B
$6.2 \times 10^{19}$
C
$3.1 \times 10^{18}$
D
$3.1 \times 10^{19}$
4
KCET 2026
MCQ (Single Correct Answer)
+1
-0
Pick out the WRONG statements about magnetic substances.
($\chi$ = magnetic susceptibility)
($\mu_r$ = relative permeability).
I. Substances with $-1 \leq \chi < 0$ are diamagnetic.
II. Substances with $\chi \gg 1$ are paramagnetic.
III. Substances with $\chi \ll 1$ are ferromagnetic.
IV. Substances with $\mu_r \gg 1$ are ferromagnetic.
A
I and II
B
III and IV
C
II and III
D
II and IV