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A voltmeter, when connected across a DC supply, reads 124 V. When a series combination of the voltmeter and an unknown resistance X is connected across the supply, the meter reads 4V. If the resistance of the voltmeter is. the value of X is-
- a)1550kΩ
- b)1600kΩ
- c)1.6kΩ
- d)1.5MΩ
Correct answer is option 'D'. Can you explain this answer?
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A voltmeter, when connected across a DC supply, reads 124 V. When a s...
⇒ X = 1500kΩ = 1.5MΩ
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A voltmeter, when connected across a DC supply, reads 124 V. When a s...
⇒ X = 1500kΩ = 1.5MΩ
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A voltmeter, when connected across a DC supply, reads 124 V. When a s...
Given information:
Voltmeter reading across DC supply = 124 V
Voltmeter reading across unknown resistance X and DC supply = 4 V
Resistance of voltmeter =
To find: Resistance of X
Solution:
Let the resistance of X be R.
When the voltmeter and X are connected in series across the DC supply, the equivalent resistance of the circuit is given by:
R +
Using voltage divider rule, we can find the voltage across X as:
V_X =
We are given that V_X = 4 V. Substituting the values in the above equation, we get:
4 =
Simplifying this equation, we get:
R =
Substituting the value of in the above equation, we get:
R =
R = 1.5 MΩ
Therefore, the resistance of X is 1.5 MΩ.
Answer: Option (D)
Voltmeter reading across DC supply = 124 V
Voltmeter reading across unknown resistance X and DC supply = 4 V
Resistance of voltmeter =
To find: Resistance of X
Solution:
Let the resistance of X be R.
When the voltmeter and X are connected in series across the DC supply, the equivalent resistance of the circuit is given by:
R +
Using voltage divider rule, we can find the voltage across X as:
V_X =
We are given that V_X = 4 V. Substituting the values in the above equation, we get:
4 =
Simplifying this equation, we get:
R =
Substituting the value of in the above equation, we get:
R =
R = 1.5 MΩ
Therefore, the resistance of X is 1.5 MΩ.
Answer: Option (D)
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A voltmeter, when connected across a DC supply, reads 124 V. When a series combination of the voltmeter and an unknown resistance X is connected across the supply, the meter reads 4V. If the resistance of the voltmeter is. the value of X is-a)1550kΩb)1600kΩc)1.6kΩd)1.5MΩCorrect answer is option 'D'. Can you explain this answer?
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A voltmeter, when connected across a DC supply, reads 124 V. When a series combination of the voltmeter and an unknown resistance X is connected across the supply, the meter reads 4V. If the resistance of the voltmeter is. the value of X is-a)1550kΩb)1600kΩc)1.6kΩd)1.5MΩCorrect answer is option 'D'. Can you explain this answer? for SSC 2024 is part of SSC preparation. The Question and answers have been prepared according to the SSC exam syllabus. Information about A voltmeter, when connected across a DC supply, reads 124 V. When a series combination of the voltmeter and an unknown resistance X is connected across the supply, the meter reads 4V. If the resistance of the voltmeter is. the value of X is-a)1550kΩb)1600kΩc)1.6kΩd)1.5MΩCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for SSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A voltmeter, when connected across a DC supply, reads 124 V. When a series combination of the voltmeter and an unknown resistance X is connected across the supply, the meter reads 4V. If the resistance of the voltmeter is. the value of X is-a)1550kΩb)1600kΩc)1.6kΩd)1.5MΩCorrect answer is option 'D'. Can you explain this answer?.
A voltmeter, when connected across a DC supply, reads 124 V. When a series combination of the voltmeter and an unknown resistance X is connected across the supply, the meter reads 4V. If the resistance of the voltmeter is. the value of X is-a)1550kΩb)1600kΩc)1.6kΩd)1.5MΩCorrect answer is option 'D'. Can you explain this answer? for SSC 2024 is part of SSC preparation. The Question and answers have been prepared according to the SSC exam syllabus. Information about A voltmeter, when connected across a DC supply, reads 124 V. When a series combination of the voltmeter and an unknown resistance X is connected across the supply, the meter reads 4V. If the resistance of the voltmeter is. the value of X is-a)1550kΩb)1600kΩc)1.6kΩd)1.5MΩCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for SSC 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A voltmeter, when connected across a DC supply, reads 124 V. When a series combination of the voltmeter and an unknown resistance X is connected across the supply, the meter reads 4V. If the resistance of the voltmeter is. the value of X is-a)1550kΩb)1600kΩc)1.6kΩd)1.5MΩCorrect answer is option 'D'. Can you explain this answer?.
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ample number of questions to practice A voltmeter, when connected across a DC supply, reads 124 V. When a series combination of the voltmeter and an unknown resistance X is connected across the supply, the meter reads 4V. If the resistance of the voltmeter is. the value of X is-a)1550kΩb)1600kΩc)1.6kΩd)1.5MΩCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice SSC tests.
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