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Resistance of two resistors is measured as( 20+- 0.2 ) ohm and (40+-0.2) ohm . the maximum absolute error in their series combination will be a.0.2 ohmb. 0.1 ohmc. 0.6 ohmd.0.4 ohm |
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Answer» (d) 0.4 ohmExplanation:In general, the rule for series circuit is that resistances add up in series. LET US say that we have three resistors Ra, Rb and Rc, then R = Ra + Rb + Rc Now if they are in parallel circuit, then net resistance reduces. Its formula is; 1/R = 1/Ra + 1/Rb + 1/Rc Now as per GIVEN information, when the resistors each having an error of -+0.2 are connected in series, then the maximum ABSOLUTE error would be =0.2+0.2=0.4 |
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