For the circuit shown in Fig, the wattmeter reading will be .... W and the power dissipted in the load is ......W

In the circuit shown in fig. For measuring resistance $$'R'$$ if the ammeter indicates $$1$$ $$A$$ and the voltmeter indicate $$100V$$, then the value of $$R$$ is ___________ Ohms and the error in measurement using the ratio $$V/$$$${\rm I}$$ is ________%

A potentiometer is basically

A dynamometer type wattmeter responds to the