Define electric power. Give its $SI$ unit.
Define electric power. Give its $SI$ unit.
The rate of work, or the rate of dissipation of energy, is called electric power. It is measured in watt $(W).$
Similar Questions
$A$ hot plate of an electric oven, connected to a $200 \,V$ line. It has two resistance coils $A$ and $B$ each of the $30\, \Omega$ which may be used separately, in series or in parallel. Find the value of the current required in each of the three cases.
$A$ hot plate of an electric oven, connected to a $200 \,V$ line. It has two resistance coils $A$ and $B$ each of the $30\, \Omega$ which may be used separately, in series or in parallel. Find the value of the current required in each of the three cases.
What will happen to the current flowing through a conductor, if the potential difference is doubled ?
What will happen to the current flowing through a conductor, if the potential difference is doubled ?
What is meant by "electrical resistance" of a conductor ? State how resistance of a conductor is affected when $(i)$ a low current passes through it for a short duration; $(ii)$ heavy current passes through it for about $30$ seconds.
What is meant by "electrical resistance" of a conductor ? State how resistance of a conductor is affected when $(i)$ a low current passes through it for a short duration; $(ii)$ heavy current passes through it for about $30$ seconds.
$(i)$ Draw a circuit diagram to show how two resistors are connected in series.
$(ii)$ In a circuit, if the two resistors of $5$ ohm and $10$ ohm are connected in series, how does the current passing through the two resistors compare ?
$(i)$ Draw a circuit diagram to show how two resistors are connected in series.
$(ii)$ In a circuit, if the two resistors of $5$ ohm and $10$ ohm are connected in series, how does the current passing through the two resistors compare ?
List any two factors on which resistance of $a$ conductor depends.
List any two factors on which resistance of $a$ conductor depends.