The voltmeter V in the figure. Reads `117V` and the ammeter A reads `0*13A`. The resistance of the voltmeter is `9000Omega` and the resistance of ammeter is `0*015Omega`. Compute (i) the resistance R, (ii) the power input to R.

Answer

(i) `1000Omega` (ii) `13*689watt`

Explanation

Current through voltmeter, `I_1=(117)/(9000)=0*013A`
Current through R, `I_2=I-I_1`
`=0.13-0.013=0.117A`
(i) Resistance, `R=(117)/(0*117)=1000Omega`
(ii) Power input to `R=I_2^2R`
`=(0*117)^2xx1000=13*689` watt