Practicing Success
If positively charged pendulum is oscillating in a uniform electric field as shown in figure. Its time period as compared to that when it was uncharged: |
Will increase Will decrease Will not change Will first increase then decrease |
Will increase |
$T'=2 \pi \sqrt{\frac{\ell}{g'}}$ where g' = g - $\frac{q E}{m}$ ∴ T' > T |