Which of the following factors will increase the sensitivity of moving coil meter?
strong spring
low numbers of turns
small area of coil
soft iron core
Correct answer is D
No explanation has been provided for this answer.
Which of the following factors does not affect the electric resistance of wire?
length
mass
temperature
cross-sectional area
Correct answer is B
No explanation has been provided for this answer.
In the wiring of houses, the fuse is connected to the wire coloured
blue
brown
yellow
yellow and green
Correct answer is B
No explanation has been provided for this answer.
20V
30V
38V
40V
Correct answer is D
V = IR1 + IR2
= 0.02 x 50 + 0.02 x 1950 = 40V
Determine the potential difference. V across the parallel resistors
2.0V
2.3V
3.0V
0.7V
Correct answer is B
V = IR
= 0.97 x 2.4 = 2.3V
WAEC Subjects
Aptitude Tests