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.
Which of the following statements about parallel plate capacitors is/are correct?
I. Capacitance of the capacitor is inversely proportional to the distance between the plates
II. Capacitors can filter a.c signals from d.c
III. Capacitors can store charges
I only
I and II only
II and III only
I, II and III
Correct answer is C
Capacitors pass AC but block DC signals (when charged up to the applied DC voltage), they are often used to separate the AC and DC components of a signal. Capacitors are also primarily used to store energy.
Which of the following statements is not an advantage of an alkaline accumulator?
The electrolyte does not need attention
It can be recharged
It has low internal resistance
It has a much longer life than lead-acid accumulator
Correct answer is A
No explanation has been provided for this answer.
A resistor with fixed resistance value is called a
resistance box
standard resistor
shunt resistor
multiplier resistor
Correct answer is B
No explanation has been provided for this answer.
The diagram above illustrates a waveform. Determine the number of wavelengths in it
4
312
212
2
Correct answer is C
No explanation has been provided for this answer.
