Physics Questions and Answers
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
If you want to learn more about the nature and properties of matter and energy or you're simply preparing for a Physics exam, these Physics past questions and answers are ideal for you.
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
Use the diagram above to calculate the current, I.
0.60A
0.97A
1.03A
5.00A
Correct answer is B
\(\frac{1}{R} = \frac{1}{R_1} + \frac{1}{R_2}\)
= \(\frac{1}{6} + \frac{1}{4}\)
R = \(\frac{12}{5} = 2.5\Omega\)
R = 2.4 + 10 = 12.4
V = IR
I = \(\frac{v}{R} = \frac{12}{12.4} = 0.97\)
Capacitors are used in the following devices, except
water pumping machines
ceiling fans
electric irons
television sets
Correct answer is C
No explanation has been provided for this answer.