MCQOPTIONS
Saved Bookmarks
| 1. |
A resistor 'R' and \[2\,\mu F\] capacitor in series is connected through a switch to 200 V direct supply. Across the capacitor is a neon bulb that lights up at 120 V. Calculate the value of R to make the bulb light up 5 s after the switch has been closed. \[(lo{{g}_{10}}2.5=0.4)\] |
| A. | \[1.3\times {{10}^{4}}\Omega \] |
| B. | \[1.7\times {{10}^{5}}\Omega \] |
| C. | \[2.7\times {{10}^{6}}\Omega \] |
| D. | \[3.3\times {{10}^{7}}\Omega \] |
| Answer» D. \[3.3\times {{10}^{7}}\Omega \] | |