Physics - EMI/AC Question with Solution | TestHub

PhysicsEMI/ACAC current and voltageEasy2 minPYQ_2020
PhysicsEasysingle choice

At time t = 0 second, voltage of an A.C. Generator starts from 0V and becomes 2V at timet=1100πsecond. The voltage keeps on increasing up 100V, after which it starts to decrease. Find the frequency of the Generator.

Options:

Answer:
B
Solution:

ε= ε0sin⁡wt

ε0=maximum voltage=100V.

att=1100π; ε=100sin⁡w1100π=2V

sin⁡w100π=2100

w100π=0.02      (for small θ, sinθ≈θ)

w=2π

f=w2π=1Hz

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:EMI/ACSubtopic:AC current and voltage
⏱ 2mℹ️ Source: PYQ_2020

Doubts & Discussion

Loading discussions...