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Q. In a Carnot engine operating between 500 K and 300 K, what is the maximum efficiency of the engine? (2021)
  • A. 40%
  • B. 60%
  • C. 50%
  • D. 20%
Q. In a Carnot engine operating between temperatures of 500 K and 300 K, what is the maximum efficiency? (2023)
  • A. 40%
  • B. 60%
  • C. 50%
  • D. 70%
Q. In a Carnot engine operating between temperatures of 500 K and 300 K, what is the efficiency of the engine? (2023)
  • A. 40%
  • B. 50%
  • C. 60%
  • D. 70%
Q. In a Carnot engine operating between temperatures T1 and T2, what is the efficiency (η) of the engine? (2023)
  • A. 1 - T2/T1
  • B. T1/T2
  • C. T2/T1
  • D. T1 - T2
Q. In a Carnot engine operating between two heat reservoirs at temperatures 500 K and 300 K, what is the maximum efficiency of the engine? (2023)
  • A. 40%
  • B. 60%
  • C. 80%
  • D. 20%
Q. In a Carnot engine, the efficiency depends on which of the following? (2023)
  • A. Temperature of the hot reservoir
  • B. Temperature of the cold reservoir
  • C. Both temperatures
  • D. Type of working substance
Q. In a chemical reaction, what does the term 'activation energy' refer to? (2023)
  • A. Energy released during the reaction
  • B. Energy required to initiate the reaction
  • C. Energy needed to maintain the reaction
  • D. Energy that is lost
Q. In a circuit with a 10Ω resistor and a 5V battery, what is the power consumed by the resistor? (2023)
  • A. 1W
  • B. 2W
  • C. 5W
  • D. 10W
Q. In a circuit with a 10Ω resistor and a 5Ω resistor in series, what is the total voltage across the circuit if the current is 2A? (2023)
  • A. 30V
  • B. 20V
  • C. 10V
  • D. 40V
Q. In a circuit with a 12V battery and two 4Ω resistors in series, what is the current flowing through the circuit? (2023)
  • A. 1A
  • B. 2A
  • C. 3A
  • D. 4A
Q. In a circuit with a 15V battery and a 5Ω resistor, what is the voltage drop across the resistor? (2019)
  • A. 3V
  • B. 5V
  • C. 15V
  • D. 0V
Q. In a circuit with a 15V battery and two resistors of 5Ω and 10Ω in series, what is the voltage drop across the 10Ω resistor? (2022)
  • A. 5V
  • B. 10V
  • C. 15V
  • D. 0V
Q. In a circuit with a 24V battery and a 6Ω resistor, what is the power consumed by the resistor? (2020)
  • A. 48W
  • B. 72W
  • C. 96W
  • D. 144W
Q. In a circuit with a 24V battery and a total resistance of 8Ω, what is the power consumed by the circuit? (2023)
  • A. 72 W
  • B. 48 W
  • C. 36 W
  • D. 24 W
Q. In a circuit with a 24V battery and two 8Ω resistors in series, what is the total current? (2022)
  • A. 1A
  • B. 2A
  • C. 3A
  • D. 4A
Q. In a circuit with a 24V battery and two resistors of 4Ω and 8Ω in parallel, what is the total current supplied by the battery? (2022)
  • A. 3A
  • B. 2A
  • C. 4A
  • D. 6A
Q. In a circuit with a 5Ω and a 10Ω resistor in parallel, what is the total current if the voltage across them is 20V? (2022)
  • A. 4A
  • B. 2A
  • C. 6A
  • D. 8A
Q. In a circuit with a 9V battery and a 3Ω resistor, what is the current flowing through the resistor? (2023)
  • A. 3A
  • B. 2A
  • C. 1A
  • D. 4A
Q. In a circuit with a 9V battery and a 3Ω resistor, what is the power dissipated by the resistor? (2021)
  • A. 3W
  • B. 9W
  • C. 6W
  • D. 12W
Q. In a circuit with a 9V battery and a 3Ω resistor, what is the power dissipated in the resistor? (2023)
  • A. 3W
  • B. 9W
  • C. 6W
  • D. 12W
Q. In a circuit with a 9V battery and two resistors of 3Ω and 6Ω in series, what is the current flowing through the circuit? (2022)
  • A. 1A
  • B. 2A
  • C. 3A
  • D. 4A
Q. In a circuit with a 9V battery and two resistors of 3Ω and 6Ω in series, what is the voltage across the 6Ω resistor? (2022)
  • A. 3V
  • B. 6V
  • C. 9V
  • D. 12V
Q. In a circuit with a voltage of 24V and a current of 6A, what is the resistance? (2020)
  • A.
  • B.
  • C.
  • D.
Q. In a circuit with an inductor, what happens to the current when the voltage is suddenly increased? (2020)
  • A. Increases immediately
  • B. Decreases immediately
  • C. Increases gradually
  • D. Decreases gradually
Q. In a circuit, if the current is 5A and the resistance is 10Ω, what is the voltage across the resistor? (2021)
  • A. 15V
  • B. 50V
  • C. 5V
  • D. 10V
Q. In a circuit, if the current is 5A and the resistance is 10Ω, what is the voltage? (2020)
  • A. 15V
  • B. 50V
  • C. 5V
  • D. 10V
Q. In a circuit, if the current is doubled while the resistance remains constant, what happens to the power consumed? (2020)
  • A. It doubles
  • B. It triples
  • C. It remains the same
  • D. It halves
Q. In a circuit, if the current is doubled while the resistance remains constant, what happens to the power? (2020)
  • A. It doubles
  • B. It quadruples
  • C. It remains the same
  • D. It halves
Q. In a circuit, if the resistance is doubled while the voltage remains constant, what happens to the current? (2021)
  • A. It doubles
  • B. It halves
  • C. It remains the same
  • D. It quadruples
Q. In a circuit, if the resistance is halved while the voltage remains constant, what happens to the current? (2022)
  • A. It halves
  • B. It doubles
  • C. It remains the same
  • D. It quadruples
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