NEET 2019
- Exam
- NEET
- Year
- 2019
- Subject
- Physics
- Chapter
- Electromagnetic Induction
NEET 2019 · Physics · Electromagnetic Induction
The variation of EMF with time for four types of generators are...
The variation of EMF with time for four types of generators are shown in the figures. Which amongst them can be called AC?
(a) 
(b)
(c)
(d)
(b)
(c)
(d)
Options
- A(a) (a) and (d)
- B(a), (b), (c) and (d)
- C(a) and (b)
- Donly (a)
Correct answer
B. (a), (b), (c) and (d)
Step-by-step solution
The emf generated due to a rotating conductor in a generator is given by
E=-where, magnetic flux linked with conductor From the above equation we can conclude that the emf generated is a varying function of time with opposite polarity. So, all the graph are correct for the given variations.