1
NDA General Ability 10 April 2022
MCQ (Single Correct Answer)
+4
-1.33
Change Language
The electric field lines from an isolated positively charged conducting sphere are
A
tangential to the conducting surface
B
at right angles to the conducting surface and towards the centre of the sphere
C
at any angle to the conducting surface
D
at right angles to the conducting surface and outwards from the centre of the sphere
2
NDA General Ability 10 April 2022
MCQ (Single Correct Answer)
+4
-1.33
Change Language
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
3
NDA General Ability 10 April 2022
MCQ (Single Correct Answer)
+4
-1.33
Change Language
Which one of the following correctly represents the SI unit of resistivity?
A
Ω 
B
Ω / m
C
Ω cm
D
Ω m
4
NDA General Ability 10 April 2022
MCQ (Single Correct Answer)
+4
-1.33
Change Language
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
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