Question

Class 10 science electricity

Answer 1

Current is the flow of electric charge across the ends of the conductor in a circuit in unit time.


Voltmeter maintains the potential difference across the conductor in a circuit


The potential difference across the conductor means the work done in carrying a unit positive test charge from one end to another end of the conductor is 1 Volt


Q= 2C
V1 = 110V
V2 =25 V
Work done 1 = 110/2 = 55 J
Work done 2 = 25/2 = 12.5 J





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Answer 2

Electric circuit is an arrangement of wires, ammeters, voltmeter, and resistors in closed manner so that the current can flow through it.

a cell or a battery helps to maintain a potential difference across the conductor.

when one joule of work is done to move a charge of one coulomb then the potential difference is called as one volt.

charge =  2 Coulomb

Voltage 1 = 110V

Voltage 2 =25 V

Work done  in 1 = 110/2 = 55 J

Work done in 2  = 25/2 = 12.5 J