Electrical Engineering Mcqs

When we rub a glass rod with a silk cloth then________________?

(A) glass rod acquires negative charge while silk acquires positive charge

(B) glass rod acquires positive charge while silk acquires negative charges

(C) both glass rod and silk acquire negative charge

(D) both glass rod and silk acquire positive charge

Submitted By: Ali Uppal


Submitted By: Ali Uppal


Self-inductance of a long solenoid is______________?

(A) μoN2A

(B) μoN2/A

(C) μoN2

(D) BA

Submitted By: Ali Uppal


Submitted By: Ali Uppal


Self inductance of a coil depends upon________________?

(A) current flowing

(B) number of turns per unit length

(C) voltage produce

(D) all

Submitted By: Ali Uppal


Energy stored in a magnetic field is given by______________?

(A) LI2

(B) L2I/2

(C) LI2/2

(D) IL2

Submitted By: Ali Uppal


Submitted By: Ali Uppal


Two oppositely charged balls A and B attract third conducting ball C when placed near them turn by turn. Then ball C must be______________?

(A) positively charged

(B) electrically neutral

(C) negatively charged

(D) positively and negatively charged

Submitted By: Ali Uppal


Submitted By: Ali Uppal


A 25eV electron has a speed of______________?

(A) 2 x 106m/sec

(B) 3 x 106m/sec

(C) 5 x 106m/sec

(D) 4 x 106m/sec

Submitted By: Ali Uppal