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The magnetic field at a point inside a 2.0 mH inductor coil becomes 0.80 of its maximum value in `20 mu s ` when the inducto is joined to a battery. Find the resistance of the circuit.A. `80 Omega`B. `320 Omega`C. `160 Omega`D. `40 Omega` |
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Answer» Correct Answer - C `Cr_(2)O_(3)(s)+Na_(2)CO_(3)(s)underset("state in absence of air")overset("Heated to molten")(rarr) underset(("x")) (NaCrO_(2))+CO_(2)(g)` `NaCrO_(2)+underset(("excess"))(H_(2)O)rarrNa[Cr(OH)_(4)]overset(CO_(2)(g))(rarr) Cr(OH)_(3)darr` |
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