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.
5.00 x 10-5C
2.50 x 10-3C
1.25 x 10-3C
1.00 x 10-2C
Correct answer is D
For series, C = \(\frac{50 \times\ 50}{50 + 50}\)
C= 25\(\mu\)F
Q = CV
Q = 25 x 100 x 10-3
Q = 2.5 x 10-3C
20cm
40cm
60cm
80cm
Correct answer is B
Let the point be x
\(\frac{2}{x}\) = \(\frac{3}{100 - x}\)
making x subject of formula,
2(100 - x) = 3x
200 - 2x = 3x
200 = 3x + 2x
200 = 5x
divide both side by 5
x = 40cm
4.0 x 102 v
4.0 x 104 v
8.0 x 102 v
8.0 x 10-2 v
Correct answer is C
V = \(\frac{W}{Q}\)
V = \(\frac{8 \times\ 10^{-2}}{100 \times\ 10^{-6}}\)
V = 8.0 x 10\(^2\) v
1750\(\Omega\)
1950\(\Omega\)
2000\(\Omega\)
2500\(\Omega\)
Correct answer is B
No explanation has been provided for this answer.
0.5 A
0.9 A
1.5 A
4.5 A
Correct answer is C
E.m.f = 1.5
r = \(\frac{1 \times\ 1 \times 1}{(1 \times\ 1) + (1 \times\ 1) + (1 \times\ 1)}\)
r = \(\frac{1}{3}\)\(\Omega\)
I = \(\frac{E.m.f}{r + R}\)
I = \(\frac{1.5}{\frac{1}{3}\ + \frac{2}{3}}\)
I = 1.5A