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.
2.25 x 10-17F
4.50 x 10-17F
2.25 x 10-16F
4.50 x 10-16F
Correct answer is A
C = \(\frac{{\varepsilon}_oA}{d}\)
= \(\frac{5{\times} 10^{-8} {\times} 10^{-12}{\times} 9}{2 {\times}10^{-3}}\)
= 22.5 x 10-17F
50J
100J
200J
400J
Correct answer is C
V = \(\frac{W}{Q}\)
W = VQ
W = 100 x 2
W = 200J
Which of the following can be used to reduce local action in a Laclanche cell?
A carbon rod as the positive pole
Pure zinc as the negative pole
Potassium permanganate solution in contact with the positive pole
common salt solution
Correct answer is C
No explanation has been provided for this answer.
An ebonite rod rubbed with fur attracts a glass rod rubbed with silk because
ebonite has a negative charge while glass has a positive charge
ebonite has a positive charge while glass has a negative charge
both have negative charges
both have positive charges
Correct answer is A
No explanation has been provided for this answer.
1.8 x 10-10N
9.0 x 10-8N
9.0 x 102N
4.5 x 103N
Correct answer is C
F =\(\frac{1}{4{\pi}{\varepsilon}_o}\) x \(\frac {q_1q_2}{r^2}\)
F =\(\frac {5 {\times} 10 {\times} 8 {\times} 10}{0.002 {\times} 0.002}\) x 9 x 10
F = 900N