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When `100`volts `DC` is applied across a coil, a current of `1amp` flows through it. When `100` volt `AC` at `50` cycles `s^(-1)` is applied to the same coil, only `0.5` ampere current follows.A. `100 Omega`B. `200 Omega`C. `300 Omega`D. `400 Omega` |
Answer» Correct Answer - B When DC is supplied `R=V/i=100/1=100Omega` When AC is supplied `Z=V/i=100/0.5=200Omega` |
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