Q. According to Faraday's law of electromagnetic induction, the induced EMF in a circuit is proportional to the rate of change of which of the following? (2020)
A.
Magnetic field strength
B.
Magnetic flux
C.
Electric field strength
D.
Current
Show solution
Solution
Faraday's law states that the induced EMF in a circuit is directly proportional to the rate of change of magnetic flux through the circuit.
Correct Answer:
B
— Magnetic flux
Learn More →
Q. According to Faraday's law, the induced EMF in a circuit is directly proportional to what?
A.
The rate of change of magnetic flux
B.
The strength of the magnetic field
C.
The resistance of the circuit
D.
The length of the conductor
Show solution
Solution
Faraday's law states that the induced EMF is directly proportional to the rate of change of magnetic flux through the circuit.
Correct Answer:
A
— The rate of change of magnetic flux
Learn More →
Q. According to Faraday's law, the induced EMF in a circuit is proportional to what?
A.
The rate of change of magnetic flux
B.
The strength of the magnetic field
C.
The resistance of the circuit
D.
The length of the conductor
Show solution
Solution
Faraday's law states that the induced EMF is directly proportional to the rate of change of magnetic flux through the circuit.
Correct Answer:
A
— The rate of change of magnetic flux
Learn More →
Q. According to Graham's law of effusion, the rate of effusion of a gas is inversely proportional to what?
A.
Molar mass
B.
Temperature
C.
Pressure
D.
Volume
Show solution
Solution
Graham's law states that the rate of effusion is inversely proportional to the square root of the molar mass of the gas.
Correct Answer:
A
— Molar mass
Learn More →
Q. According to Kirchhoff's Current Law, if three currents enter a junction as 2A, 3A, and 4A, what is the total current leaving the junction?
Show solution
Solution
According to Kirchhoff's Current Law, the total current entering a junction equals the total current leaving it. Total entering = 2A + 3A + 4A = 9A.
Correct Answer:
D
— 9A
Learn More →
Q. According to Kirchhoff's Current Law, if three currents enter a junction as 2A, 3A, and 4A, what is the current leaving the junction?
Show solution
Solution
According to Kirchhoff's Current Law, the sum of currents entering a junction equals the sum of currents leaving. Therefore, I_out = 2A + 3A + 4A = 9A.
Correct Answer:
D
— 9A
Learn More →
Q. According to Kirchhoff's Current Law, if three currents enter a junction as 2A, 3A, and 1A, what is the total current leaving the junction?
Show solution
Solution
According to Kirchhoff's Current Law, total current entering = total current leaving. 2A + 3A + 1A = 6A.
Correct Answer:
B
— 5A
Learn More →
Q. According to Kirchhoff's Current Law, if three currents entering a junction are 2A, 3A, and 5A, what is the total current leaving the junction?
Show solution
Solution
According to Kirchhoff's Current Law, the total current entering a junction equals the total current leaving it. Therefore, total current leaving = 2A + 3A + 5A = 10A.
Correct Answer:
A
— 10A
Learn More →
Q. According to Kirchhoff's Voltage Law, the sum of the potential differences around any closed loop in a circuit is equal to what?
A.
Zero
B.
The total current
C.
The total resistance
D.
The total power
Show solution
Solution
Kirchhoff's Voltage Law states that the sum of the electromotive forces and potential differences in any closed loop is zero.
Correct Answer:
A
— Zero
Learn More →
Q. According to Kirchhoff's Voltage Law, the sum of the potential differences around any closed loop in a circuit must equal what?
A.
Zero
B.
The total current
C.
The total resistance
D.
The total power
Show solution
Solution
Kirchhoff's Voltage Law states that the sum of the electrical potential differences (voltage) around any closed circuit is zero.
Correct Answer:
A
— Zero
Learn More →
Q. According to Newton's third law, if object A exerts a force on object B, what does object B do?
A.
Exerts a greater force on A
B.
Exerts an equal and opposite force on A
C.
Exerts no force
D.
Exerts a lesser force on A
Show solution
Solution
Newton's third law states that for every action, there is an equal and opposite reaction.
Correct Answer:
B
— Exerts an equal and opposite force on A
Learn More →
Q. According to the bar graph, what was the percentage increase in sales from 2021 to 2022 for oranges? (2021)
A.
10%
B.
20%
C.
30%
D.
40%
Show solution
Solution
The bar graph indicates a 20% increase in sales for oranges from 2021 to 2022.
Correct Answer:
B
— 20%
Learn More →
Q. According to the bar graph, what was the percentage increase in sales from 2021 to 2022 for Bananas? (2021)
A.
10%
B.
20%
C.
30%
D.
40%
Show solution
Solution
The bar graph indicates a 20% increase in sales for Bananas from 2021 to 2022.
Correct Answer:
B
— 20%
Learn More →
Q. According to the bar graph, what was the percentage increase in sales from Q1 to Q2 for Product A?
A.
10%
B.
20%
C.
30%
D.
40%
Show solution
Solution
The bar graph indicates a 30% increase in sales from Q1 to Q2 for Product A.
Correct Answer:
C
— 30%
Learn More →
Q. According to the bar graph, what was the percentage increase in sales from Q1 to Q2 for Electronics?
A.
10%
B.
20%
C.
30%
D.
40%
Show solution
Solution
The bar graph indicates a 20% increase in sales from Q1 to Q2 for Electronics.
Correct Answer:
B
— 20%
Learn More →
Q. According to the bar graph, which city had the highest pollution levels in 2023? (2023)
A.
City A
B.
City B
C.
City C
D.
City D
Show solution
Solution
The bar graph indicates that City C had the highest pollution levels in 2023.
Correct Answer:
C
— City C
Learn More →
Q. According to the bar graph, which demographic had the lowest participation in the survey?
A.
18-25 years
B.
26-35 years
C.
36-45 years
D.
46-55 years
Show solution
Solution
The bar graph shows that the 46-55 years demographic had the lowest participation in the survey.
Correct Answer:
D
— 46-55 years
Learn More →
Q. According to the bar graph, which fruit's sales were consistently lower than the average sales of all fruits?
A.
Pineapples
B.
Mangoes
C.
Peaches
D.
Kiwis
Show solution
Solution
Pineapples had sales consistently lower than the average sales depicted in the graph.
Correct Answer:
A
— Pineapples
Learn More →
Q. According to the bar graph, which fruit's sales were consistently lower than the average sales of all fruits over the three years?
A.
Pineapples
B.
Mangoes
C.
Peaches
D.
Kiwis
Show solution
Solution
Mangoes had sales consistently lower than the average across the three years.
Correct Answer:
B
— Mangoes
Learn More →
Q. According to the bar graph, which month had the highest sales figures?
A.
January
B.
March
C.
June
D.
December
Show solution
Solution
The bar graph indicates that December had the highest sales figures among the months.
Correct Answer:
D
— December
Learn More →
Q. According to the bar graph, which month had the highest sales for all products combined?
A.
January
B.
April
C.
July
D.
October
Show solution
Solution
The bar graph indicates that October had the highest combined sales for all products.
Correct Answer:
D
— October
Learn More →
Q. According to the bar graph, which month had the lowest sales for all products combined?
A.
March
B.
April
C.
May
D.
June
Show solution
Solution
The bar graph clearly shows that March had the lowest sales for all products combined.
Correct Answer:
A
— March
Learn More →
Q. According to the bar graph, which product saw the most significant drop in sales during the last quarter?
A.
Product X
B.
Product Y
C.
Product Z
D.
Product W
Show solution
Solution
The bar graph shows that Product Z experienced the most significant drop in sales during the last quarter.
Correct Answer:
C
— Product Z
Learn More →
Q. According to the bar graph, which two fruits had sales figures that were closest to each other?
A.
Apples and Bananas
B.
Cherries and Grapes
C.
Bananas and Grapes
D.
Apples and Cherries
Show solution
Solution
The bar graph indicates that the sales figures for bananas and grapes were very close, making them the closest pair.
Correct Answer:
C
— Bananas and Grapes
Learn More →
Q. According to the Biot-Savart Law, the magnetic field dB at a point due to a current element Idl is proportional to which of the following?
A.
Idl
B.
sin(θ)
C.
1/r^2
D.
Both Idl and sin(θ)
Show solution
Solution
The magnetic field dB is proportional to Idl and sin(θ), where θ is the angle between the current element and the line connecting the current element to the point of interest.
Correct Answer:
D
— Both Idl and sin(θ)
Learn More →
Q. According to the ideal gas law, which of the following is the correct equation?
A.
PV = nRT
B.
PV = nR
C.
P = nRT/V
D.
V = nP/RT
Show solution
Solution
The ideal gas law is represented by the equation PV = nRT.
Correct Answer:
A
— PV = nRT
Learn More →
Q. According to the kinetic molecular theory, which of the following statements is true?
A.
Gas particles have significant volume.
B.
Gas particles are in constant motion.
C.
Gas particles attract each other.
D.
Gas particles do not collide.
Show solution
Solution
According to the kinetic molecular theory, gas particles are in constant motion.
Correct Answer:
B
— Gas particles are in constant motion.
Learn More →
Q. According to the kinetic theory of gases, the pressure exerted by a gas is due to:
A.
the gravitational force on the gas
B.
the collisions of gas molecules with the walls of the container
C.
the temperature of the gas
D.
the volume of the gas
Show solution
Solution
The pressure exerted by a gas is due to the collisions of gas molecules with the walls of the container, which transfers momentum to the walls.
Correct Answer:
B
— the collisions of gas molecules with the walls of the container
Learn More →
Q. According to the kinetic theory, the pressure exerted by a gas is due to which of the following?
A.
The weight of the gas molecules.
B.
The collisions of gas molecules with the walls of the container.
C.
The temperature of the gas.
D.
The volume of the gas.
Show solution
Solution
The pressure of a gas is caused by the collisions of gas molecules with the walls of the container, which exert force on the walls.
Correct Answer:
B
— The collisions of gas molecules with the walls of the container.
Learn More →
Q. According to the kinetic theory, the pressure exerted by a gas is due to:
A.
Gravitational force
B.
Molecular collisions with the walls
C.
Temperature of the gas
D.
Volume of the gas
Show solution
Solution
The pressure exerted by a gas is due to the collisions of gas molecules with the walls of the container.
Correct Answer:
B
— Molecular collisions with the walls
Learn More →
Showing 3061 to 3090 of 27813 (928 Pages)