1
KCET 2026
MCQ (Single Correct Answer)
+1
-0
In a conducting region, $10^{19}$ electrons and $10^{19}$ protons move to the left, while $10^{19}$ $\alpha$-particles move to the right per second. The resulting electric current is $(e = 1.6 \times 10^{-19}\text{ C})$ _________
A
$3.2$ A towards left
B
$3.2$ A towards right
C
$1.6$ A towards left
D
$1.6$ A towards right
2
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
3
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
4
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
$3.1 \times 10^{19}$