a voltmeter and an ammeter are used to respectively monitor the voltage across the current through the resistor
1 answer:
When a current is established in a closed conducting loop , we use ammeter . Due to this resultant potential developed detected by voltmeter .
When current flows through loop , it gets conducted . Due to this Electric field is generated . This happens due to induced magnetic field. The free electrons were at rest until current is there , still ammeter detects some deflection. This deflection is due to zero current. Due to magnetic field , current in coil changes. Mathematically, The presence of conducting loop is not necessary for having electric field.
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