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pls explain
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Asked by gpnkumar0 | 14 Mar, 2018, 09:37: PM
answered-by-expert Expert Answer
First circuit the key is closed. See the symbol (•). Hence voltmeter will show the reading 2 V. In second circuit key is open [ symbol ( ) ]. Since voltmeter is connected to battery through key, it will not show any voltage, it will show zero reading. Hence the first option "2V in circuit-1 and zero volt in circuit-2" is the correct answer
Answered by Thiyagarajan K | 15 Mar, 2018, 11:23: AM

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