WebNEET MCQ Books for XI th & XII th Physics, Chemistry & Biology An alternating current is given as i = i1 cos ωt − i2 sin ωt. The rms current is given by An alternating current is given as i = i 1 cos ωt - i 2 sin ωt. The rms current is given by 1. i1 + i2 √2 i 1 + i 2 2 2. i1 + i2 √2 i 1 + i 2 2 3. √i2 1 + i2 2 2 i 1 2 + i 2 2 2 WebQ. Resistance of a given wire is obtained by measuring the current flowing in it and the voltage difference applied across it. If the percentage errors in the measurement of the current and the voltage difference are 3% each, then error in the value of resistance of the wire is :- (1) 3% (2) 6% (3) zero (4) 1% [AIEEE - 2012] Ans. (2) Q.
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