construction and working principle of voltmeter
Answers
Answer:
Working Principle of Voltmeter:
⇒ It must be connected in parallel in which we want to measure the voltage.
⇒Parallel connection is used because a voltmeter is constructed in such a way that it has a very high value of resistance.
⇒ If it is connected in parallel, than the load impedance comes parallel with the high resistance of the voltmeter & hence the combination will give almost the same the impedance that the load had.
⇒ Also in parallel circuit we know that the voltage is same so the voltage between the voltmeter & the load is almost same & hence voltmeter measures the voltage.
⇒ For an ideal voltmeter, we have the resistance is to be infinity & hence the current drawn to be zero so there will be no power loss in the instrument.
Explanation:
Keep Smiling...
Answer:
Working principle of Voltmeter:
=> It must be connected in parallel in which we want to measure the voltage.
=> Parallel connection is used because a voltmeter is constructed in such a way that it has a very high value of resistance.
=> It it is connected in parallel, than the load impedance comes parallel with the high resistance of the voltmeter & hence the combination will give almost the same the impedance that the load had.
=> Also in parallel circuit we know that the voltage is same so the voltage between voltmeter & the load is almost & hence voltmeter measures the voltage.
=> For an ideal voltmeter, we have the resistance is to be infinity & hence the current drawn to be zero so there will be no power loss in thr instrument.
Explanation:
Keep Smiling...