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A voltmeter connected across 15 kΩ resistor reads 10 V in the circuit given. Voltmeter is rated at 500 Ω / volt and has a full- scale reading of 20 V. The supply voltage is:
- a)60 V
- b)45 V
- c)30 V
- d)90 V
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
A voltmeter connected across 15 k resistor reads 10 V in the circuit g...
Concept:
The voltmeter sensitivity (Sv) is determined by dividing the sum of the resistance of the meter (Rm)
Mathematically, sensitivity is expressed as:
E = Rated Voltage or Full scale Reading
Voltmeter sensitivity is expressed in Ohm/Volt
Rm = Sv × E
E = Rated Voltage or Full scale Reading
Voltmeter sensitivity is expressed in Ohm/Volt
Rm = Sv × E
Calculation:
Sensitivity of voltmeter = 500 Ω/V
Internal resistance of voltmeter = 500 ×
20 = 10 kΩ
Effective resistance across A – B is
= 10 || 15 = 6 kΩ
The voltmeter reading is 10 V
⇒ VAB = 10 V
By voltage division,
Sensitivity of voltmeter = 500 Ω/V
Internal resistance of voltmeter = 500 ×
20 = 10 kΩ
Effective resistance across A – B is
= 10 || 15 = 6 kΩ
The voltmeter reading is 10 V
⇒ VAB = 10 V
By voltage division,
Most Upvoted Answer
A voltmeter connected across 15 k resistor reads 10 V in the circuit g...
Concept:
The voltmeter sensitivity (Sv) is determined by dividing the sum of the resistance of the meter (Rm)
Mathematically, sensitivity is expressed as:
E = Rated Voltage or Full scale Reading
Voltmeter sensitivity is expressed in Ohm/Volt
Rm = Sv × E
E = Rated Voltage or Full scale Reading
Voltmeter sensitivity is expressed in Ohm/Volt
Rm = Sv × E
Calculation:
Sensitivity of voltmeter = 500 Ω/V
Internal resistance of voltmeter = 500 ×
20 = 10 kΩ
Effective resistance across A – B is
= 10 || 15 = 6 kΩ
The voltmeter reading is 10 V
⇒ VAB = 10 V
By voltage division,
Sensitivity of voltmeter = 500 Ω/V
Internal resistance of voltmeter = 500 ×
20 = 10 kΩ
Effective resistance across A – B is
= 10 || 15 = 6 kΩ
The voltmeter reading is 10 V
⇒ VAB = 10 V
By voltage division,
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Question Description
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A voltmeter connected across 15 k resistor reads 10 V in the circuit given. Voltmeter is rated at 500 / volt and has a full- scale reading of 20 V. The supply voltage is:a)60 Vb)45 Vc)30 Vd)90 VCorrect answer is option 'A'. Can you explain this answer? for Electrical Engineering (EE) 2026 is part of Electrical Engineering (EE) preparation. The Question and answers have been prepared according to the Electrical Engineering (EE) exam syllabus. Information about A voltmeter connected across 15 k resistor reads 10 V in the circuit given. Voltmeter is rated at 500 / volt and has a full- scale reading of 20 V. The supply voltage is:a)60 Vb)45 Vc)30 Vd)90 VCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for Electrical Engineering (EE) 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A voltmeter connected across 15 k resistor reads 10 V in the circuit given. Voltmeter is rated at 500 / volt and has a full- scale reading of 20 V. The supply voltage is:a)60 Vb)45 Vc)30 Vd)90 VCorrect answer is option 'A'. Can you explain this answer?.
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