If a positively charged pendulum is oscillating in a uniform electric field as shown in Figure. Its
time period of SHM as compared to that when it was uncharged.

Will decrease
Will not change
Will increase
Will first increase then decrease

Question

If a positively charged pendulum is oscillating in a uniform electric field as shown in Figure. Its
time period of SHM as compared to that when it was uncharged.

Will decrease
Will not change
Will increase
Will first increase then decrease

Toppr Admin · Accepted Answer

The Time Period of pendulum- T-2-x3C0-x221A-l-x221A-geff-xA0-where geff-g-x2212-qEmwhen E comes to in picture then geffdecreases - Therefore- Time period increases-xA0-Hence- Option A is answer-xA0-

If a positively charged pendulum is oscillating in a uniform electric field as shown in Figure. Itstime period of SHM as compared to that when it was uncharged.Will decreaseWill not changeWill increaseWill first increase then decrease

The Time Period of pendulum, T=2π√l√geff where geff=g−qEmwhen E comes to in picture then geffdecreases . Therefore, Time period increases. Hence, Option A is answer.

If a positively charged pendulum is oscillating in a uniform electric field as shown in Figure. Its
time period of SHM as compared to that when it was uncharged.

Will decrease
Will not change
Will increase
Will first increase then decrease

The Time Period of pendulum, T= $2 π \frac{\sqrt{l}}{\sqrt{g_{e f f}}}$
where $g_{e f f} = g - \frac{q E}{m}$
when E comes to in picture then $g_{e f f}$ decreases . Therefore, Time period increases.
Hence, Option A is answer.