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.
84s
112s
168s
280s
616s
Correct answer is C
Heat energy = Elect. energy
mc\(\theta\) = power x time
1 x 4200 x (70 - 40) = 750 x t
t = 168s
16.00A
4.00A
0.50A
0.25A
0.06A
Correct answer is B
I\(^2\)Rt = mI;
I = \(\sqrt{\frac{mI}{Rt}}\)
= \(\sqrt{\frac{10 \times 336}{10 \times 21}}\)
= \(\sqrt{16}\)
= 4.0A
Electric motor primarily converts
electrical energy into chemical energy
electrical energy into heat energy
kinetic energy into potential energy
electrical energy into mechanical energy
mechanical energy into light energy
Correct answer is D
No explanation has been provided for this answer.
V2lt
I2t/R
l2Rt
lR2tR
V2Rt
Correct answer is C
No explanation has been provided for this answer.
0.0 V
1.5 V
2.0 V
3.0V
4.0 V
Correct answer is A
No explanation has been provided for this answer.