Thermal Effect of Current

What are passive and active elements?

What is passive components give example?

Are resistors passive?

What is meant by passive components?

A heating coil rated $1000 \mathrm{W}-220 \mathrm{V}$ is being operated under $180 \mathrm{V}$. The percentage shortfall in the power generated from it is nearly

What is active and passive resistor?

The n rows each containing m cells in series are joined in parallel. Maximum current is taken from this combination across an external resistance of $3\mathrm{\Omega }$ . If the total number of cells used is 24 and internal resistance of each cell is $0.5\mathrm{\Omega }$ , then

Two identical batteries each with emf $E=2 \mathrm{V}$ and internal resistance $r=1 \mathrm{\Omega }$ are available to produce heat in an external resistance by passing a current through it. The maximum Joulean power that can be developed across $R$ using these batteries is:

The maximum power dissipated in an external resistance $R$, when connected to a cell of emf $E$ and internal resistance $r$, will be

A battery of emf $E$ and internal resistance $r$ is connected to an external resistance $R$ the condition for maximum power transfer is

A battery having emf E and internal resistance r is connected to an external circuit. The power output of the battery is maximum. When

A battery having emf E and internal resistance r is connected to an external circuit. The power output of the battery is maximum. When

A battery of $10 \mathrm{V}$ and internal resistance $0.5 \mathrm{\Omega }$ is connected across a variable resistance $R$. The value of $R$ for which the power delivered is maximum is equal to:

Two identical batteries each of e.m.f. $2 \mathrm{V}$ and internal resistance $1 \mathrm{\Omega }$ are available to produce heat in the external resistance by passing a current through it. The maximum power that can be developed across $R$ using these batteries is,