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.
i, ii, iii and iv only
iv and v only
i, ii and iii only
i, ii and v only
all
Correct answer is C
No explanation has been provided for this answer.
0.00004g/C
0.00002g/C
0.02500g/C
0.05000g/C
0.00001g/C
Correct answer is A
M = Itz
5.01 - 5.00 = 50 x 5 x z
z = 0.00004g/C
\(\frac{6^2}{40^2}\)ohms
\(\frac{40}{6^2}\)ohms
\(\frac{40}{6}\)ohms
6 x 40 ohms
\(\frac{6^2}{40}\)ohms
Correct answer is E
Power \(\frac{V^2}{R}\)
40 = \(\frac{6 \times 6}{r}\)
R = \(\frac{36}{40}\)\(\Omega\)
Which of the following is the correct definition of 'half-life'?
the average life-time of a radioactive material
the time it takes a radioactive material to decay to half of its original quantity
half the period a radioactive material decays completely
half of the decay constant
the decay constant times life-time
Correct answer is B
No explanation has been provided for this answer.
5 volts
3.5 volts
2.5 volts
1 volts
10 volts
Correct answer is B
E.m.f. = I(R + r) = 0.5(2+5) = 3.5 volts