1
NDA General Ability 10 April 2022
MCQ (Single Correct Answer)
+4
-1.33
The frequency of an alternating current is 3 Hz. It implies that
A
there are 6 cycles/s
B
there are 3 cycles/s
C
there are 2 cycles/s
D
there is only 1 cycle/s
2
NDA General Ability 10 April 2022
MCQ (Single Correct Answer)
+4
-1.33
Which one of the following correctly represents the SI unit of resistivity?
A
Ω 
B
Ω / m
C
Ω cm
D
Ω m
3
NDA General Ability 10 April 2022
MCQ (Single Correct Answer)
+4
-1.33
What is the current required to light a 60 W incandescent bulb in a domestic supply of 240 V ?
A
0.5 A
B
0.25 A
C
1.0 A
D
5.0 A
4
NDA General Ability 10 April 2022
MCQ (Single Correct Answer)
+4
-1.33
The magnetic field produced by a current-carrying straight wire at a point outside the wire depends
A
inversely on the distance from it
B
directly on the distance from it
C
inversely at short distances and directly at large distances from it
D
directly on the distance (at short distances) and inversely on the distance (at long distances) from it