Font size
WorksheetsPhysical Science Pressure, Torque and Electricity
Total questions: 41
Worksheet time: 48mins
What is the main purpose of a Van de Graaff generator?
To generate mechanical energy
To create static electricity
To produce thermal energy
To convert solar power
What happens to a person's hair when they touch the dome of an operating Van de Graaff generator?
The hair becomes wet
Nothing happens to the hair
The hair stands straight up
The hair falls flat
Which type of electrical charge builds up on the dome of a Van de Graaff generator?
Neutral charge
Positive charge
Alternating charge
Negative charge
What safety precaution should be taken when using a Van de Graaff generator?
it should be earthed to prevent accidental discharge
Stand in water
Touch it constantly
use devices while touching it
What happens when you rub a plastic rod with wool?
The plastic rod gains protons
The plastic rod gains electrons and becomes negatively charged
The plastic rod loses all its charge
The plastic rod becomes positively charged
When a glass rod is rubbed with silk, what happens to it?
It remains neutral
It becomes negatively charged
It becomes positively charged
It loses all electrical properties
Which of the following defines pressure?
force divide to area
force multiply by area
force added to area
force subtracted to area
Why do sharp knives cut better than dull ones?
They are made of stronger metal
They concentrate more pressure on a smaller area
They are usually newer
They reflect more light
Which situation demonstrates the highest pressure?
An elephant standing on all four feet
A thumbtack point pressed against a wall
A book lying flat on a table
A brick standing on its largest face
Which of the following statements best describes how pressure changes with depth in a liquid?
Pressure decreases as depth increases
Pressure increases as depth increases
Pressure remains constant regardless of depth
Pressure only changes near the surface
What happens to the pressure in a liquid when you double its depth?
It remains the same
It doubles
It decreases by half
it quadruples
What happens to gas pressure when the volume of a container decreases while temperature remains constant?
The pressure increases
The pressure decreases
The pressure stays the same
The pressure becomes zero
Which statement best describes the relationship between number of gas particles and pressure?
More particles create less pressure
Number of particles has no effect on pressure
More particles create more pressure
Only temperature affects pressure
Compute for D2. (the answer with CAPITAL LETTER OF THE UNIT MEASUREMENT no space in between) Note: Answer should be to the nearest 2 decimal points.
(a)
Which of the following is the unit measurement of force?
Kg m/s^2
Newton
m/s^2
Kg
The unit for measuring moment force is:
Newtons (N)
Newton-meters (N⋅m)
Meters (m)
Kilograms (kg)
If you apply a force of 10 N at a distance of 2 meters from the pivot point, what is the moment? (Type the correct answer with the unit measurement without the space in between)
(a)
The moment of a force is maximum when the force is applied:
At a 45-degree angle
At a 90-degree angle
At a 180-degree angle
At a 0-degree angle
In the equation V=IR, what does 'R' represent?
Rate
Reactance
Resistance
Range
What happens to voltage if current increases and resistance stays the same?
Voltage stays the same
Voltage decreases
Voltage increases
Voltage becomes zero
If you double the voltage while keeping resistance constant, what happens to the current?
It stays the same
It doubles
It halves
It becomes zero
What unit is used to measure resistance?
Volt
Ampere
Watt
Ohm
In a circuit with 27 volts and 3 ohms of resistance, what is the current? (Type the answer with the unit measurement without space in between)
(a)
If the voltage across a circuit is 64 volts and the current is 4 amperes, what is the resistance? (Type the answer with space in between the number and the unit measurement in CAPITAL LETTER)
(a)
Compute for the total resistance. (Type the number answer only to the nearest two decimal points)
(a)
Compute the total current in the parallel circuit. (Type the answer with the letter unit measurement without space in between them)
(a)
What kind of circuit is in the image? (Type the answer using the CAPITAL LETTERS ONLY)
(a)
Compute the total resistance in the series circuit. (Type the numerical answer only)
(a)
Name the circuit in the image. (Use CAPITAL LETTERS ONLY)
(a)
In a parallel circuit, what happens to the current?
The current remains the same throughout
The current divides among different paths
The current doubles at each junction
The current stops flowing completely
Name the circuit symbol. (Type the answer using CAPITAL LETTERS ONLY)
(a)
Name the circuit symbol. (Type the answer using CAPITAL LETTERS ONLY)
(a)
Name the circuit symbol. (Type the answer using CAPITAL LETTERS ONLY)
(a)
The image shows a circuit symbol, which of the following is it?
wires joined at a junction
wires crossed over each other
rheostat
fixed resistor
The image shows a circuit symbol, which of the following is it?
wires joined at a junction
wires crossed over each other
rheostat
fixed resistor
Name the circuit symbol. (Type the answer using CAPITAL LETTERS ONLY)
(a)
Name the circuit symbol. (Type the answer using CAPITAL LETTERS ONLY)
(a)
Name the circuit symbol. (Type the answer using CAPITAL LETTERS ONLY)
(a)
Name the circuit symbol. (Type the answer using CAPITAL LETTERS ONLY)
(a)
Name the circuit symbol. (Type the answer using CAPITAL LETTERS ONLY)
(a)
Name the circuit symbol. (Type the answer using CAPITAL LETTERS ONLY)
(a)
