Which device can convert all electrical energy into heat?

  • A
    Thermocouple
  • B
    Radiator
  • C
    Heater
  • D
    Generator

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Similar Questions

If two electric bulbs have $40\,W$ and $60\,W$ ratings at $220\,V$,then the ratio of their resistances will be

Two bulbs of $40\,W$ each are connected in parallel. The total power consumed by this combination is ............. $W$.

If the power in the external resistance $R$ is maximum,then which of the following statements are correct?
$(i) R = r$
$(ii)$ Power in $R$ is $\frac{E^2}{4R}$
$(iii)$ Input power is $\frac{E^2}{2R}$
$(iv)$ Efficiency is $50\%$

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The maximum power drawn from a source with electromotive force $E$ and internal resistance $r$ is given by:

Two heating coils of resistances $10 \Omega$ and $20 \Omega$ are connected in parallel and connected to a battery of emf $12 \text{ V}$ and internal resistance $1 \Omega$. The ratio of the power consumed by them is:

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