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.
The electrolyte in the Nickei-iron (Nife) accumulator is
potassium hydroxide solution
dilute tetraoxosulphate(VI)acid
copper tetraoxosulphate(VI)solution
ammonium chloride solution
Correct answer is A
No explanation has been provided for this answer.
When an a.c. voltage is applied to a capacitor, no power is consumed because the current
leads the voltage by 90°
lags behind the voltage by 90°
and voltage are in phase
and voltage are 180° out of phase
Correct answer is A
In a capacitive circuit, current leads voltage by 90°, or voltage lags current by 90°
constant (ε) and area
area and distance.
constant (ε) only
distance only
Correct answer is B
No explanation has been provided for this answer.
0.25 W
4. 00 W
38.4W
60.00W
Correct answer is D
Electrical power = IV or I2R or (V)/R
With V = 240v, R = 960Ω
Power (V2)/R = (240 X 240)/960
=60Watts
The main purpose of the transformer in an a.c radio set is to?
increase power to the radio
step up the voltage
convert energy from a.c to d.c
step down the voltage
Correct answer is D
No explanation has been provided for this answer.