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.
0.4m
0.8m
2.5m
5.0m
Correct answer is A
L = \(\frac{RA}{e} = \frac{11 \times 4 \times 10^{-8}}{1.1 \times 10{-4}} = 0.4m\)
Which of the following statements explains lost volt in an electric circuit? The
total p.d from a source to maintain a flow of current through the circuit as well as the source
p.d to drive current through the circuit component except the source
p.d across all external components connected to the source of electricity
p.d across the internal resistance of the cell
Correct answer is D
The lostvolt is the potential drop in a cell due to internal resistance.
N7.20
N18.00
180.00
N720.00
Correct answer is A
Cost = \(\frac{Pt}{1000}\) x cost per kWh
= \(\frac{40 \times 72}{1000} \times 2.50 = N7.20\)
75%
50%
33%
25%
Correct answer is A
R = \(r_1 + R = 1 + 3 = 4\Omega\)
\(\frac{3}{4} \times \frac{100}{1} = 75\)%
1.2C
3.3C
3330.0C
12.0000.0C
Correct answer is A
Q = CV
= 600 x 10-6 x 200 = 1.2C