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.
0.8
0.8N/C
20.0N/C
4.2N/C
Correct answer is C
Field intensity = \(\frac{force}{charge}\)
\(\frac{4}{0.2}\) = 20N/C
0.44 x 10 8ms-1
2.25 x 10 8ms-1
3.0 x 10 8ms-1
4.0 x 10 8ms-1
4.33 x 10 8ms-1
Correct answer is B
n = \(\frac{\text{speed in air }}{\text{speed in water }}\)
\(\frac{4}{3}\) = \(\frac{3 \times 10^8}{v}\)
v = 2.25 x 108ms-1
heat \( \to \) light \( \to \) sound \( \to \) kinetic
kinetic \( \to \) light \( \to \) heat \( \to \) electricity
heat \( \to \) kinetic\( \to \) electricity \( \to \) heat \( \to \) light
electricity \( \to \) kinetic \( \to \) heat \( \to \) light
heat \( \to \) sound \( \to \) kninetic \( \to \) electricity
Correct answer is C
No explanation has been provided for this answer.
0.10 ohms
0.25 ohms
0.40 ohms
2.50 ohms
4.00 ohms
Correct answer is C
IR = 2 and Ir = 0.2
I = \(\frac{2}{R}\) ; I = \(\frac{0.2}{r}\)
\(\frac{2}{4}\) = \(\frac{0.2}{r}\)
r = 0.4\(\Omega\)
1.8Jg-1oC
0.6Jg-1oC
0.18Jg-1oC
18Jg-1oC
0.06Jg-1oC
Correct answer is C
Heat energy = Electrical energy
mc\(\Omega\) = I2RTt
1000 x c x 10 = 3 x 3 x 20 x 10
0.18Jg-1oC