The flow of charge through a conducting wire connected to a cell is the result of chemical reaction inside the cell.
The flow of charge through a conducting wire connected to a cell is the result of chemical reaction inside the cell.
True
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$Ohm's$ law is a relation between the power used in a circuit to the current and the potential difference.
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The resistivity does not change if
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If $4.8\, A$ current is passed through an electrical appliance, then the number of electrons passing through it in $1\, second$ will be $......$
If $4.8\, A$ current is passed through an electrical appliance, then the number of electrons passing through it in $1\, second$ will be $......$
In a household electric circuit different appliances are connected in parallel to one another. Give two reasons for this. An electrician puts a fuse of rating $5 \,A$ in that part of domestic electrical circuit in which an electrical heater of rating $1.5\, kW , 220 \,V$ is operating. What is likely to happen in this case and why ? What change, if any, needs to be made ?
In a household electric circuit different appliances are connected in parallel to one another. Give two reasons for this. An electrician puts a fuse of rating $5 \,A$ in that part of domestic electrical circuit in which an electrical heater of rating $1.5\, kW , 220 \,V$ is operating. What is likely to happen in this case and why ? What change, if any, needs to be made ?
What is the resistance of an electric arc lamp, if the lamp uses $20\, A$ when connected to $220$ volt line ?
What is the resistance of an electric arc lamp, if the lamp uses $20\, A$ when connected to $220$ volt line ?