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Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:
Assertion : Watt hour has units of energy.
Reason : Kilowatt hour (kW h) is the unit of electric power.
  • a)
    Both assertion and reason are true and reason is the correct explanation of assertion.
  • b)
    Both assertion and reason are true but reason is not the correct explanation of assertion.
  • c)
    Assertion is true but reason is false.
  • d)
    Assertion is false but reason is true.
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
Direction: In the following questions, a statement of assertion is fo...
Kilowatt (1000 watt) is the unit of power. Kilowatt hour is the power consumed in one hour = power x time = energy. One watt is equal to Joule per second. Hence, watt # time has units of energy.
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Most Upvoted Answer
Direction: In the following questions, a statement of assertion is fo...
Assertion : Watt hour has units of energy.

Reason : Kilowatt hour (kW h) is the unit of electric power.

The correct answer is option 'C' which states that the assertion is true but the reason is false. Let's analyze each statement individually to understand why this is the correct answer.

Assertion : Watt hour has units of energy.
- This statement is correct. The watt hour (Wh) is a unit of energy. It represents the amount of energy consumed or generated by a device with a power of one watt over a period of one hour. Energy is typically measured in units such as joules (J) or kilowatt hours (kWh), and watt hour is a smaller unit of energy.

Reason : Kilowatt hour (kW h) is the unit of electric power.
- This statement is incorrect. The kilowatt hour (kWh) is not a unit of electric power, but rather a unit of energy. Electric power is the rate at which electrical energy is consumed or produced, and it is measured in units of watts (W) or kilowatts (kW). The kilowatt hour is a unit of energy that represents the amount of energy consumed or produced at a rate of one kilowatt over a period of one hour.

Explanation:
- The assertion is true because the watt hour is indeed a unit of energy. It represents the amount of energy consumed or generated by a device with a power of one watt over a period of one hour.
- However, the reason is false because the kilowatt hour is not a unit of electric power. It is a unit of energy that represents the amount of energy consumed or produced at a rate of one kilowatt over a period of one hour.
- Therefore, the correct answer is option 'C' which states that the assertion is true but the reason is false. The reason does not provide the correct explanation for the assertion.
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Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : Watt hour has units of energy.Reason : Kilowatt hour (kW h) is the unit of electric power.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'C'. Can you explain this answer?
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Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : Watt hour has units of energy.Reason : Kilowatt hour (kW h) is the unit of electric power.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'C'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : Watt hour has units of energy.Reason : Kilowatt hour (kW h) is the unit of electric power.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction: In the following questions, a statement of assertion is followed by a statement of reason. Mark the correct choice as:Assertion : Watt hour has units of energy.Reason : Kilowatt hour (kW h) is the unit of electric power.a)Both assertion and reason are true and reason is the correct explanation of assertion.b)Both assertion and reason are true but reason is not the correct explanation of assertion.c)Assertion is true but reason is false.d)Assertion is false but reason is true.Correct answer is option 'C'. Can you explain this answer?.
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