AC Generator

AC Generator

Assessment

Interactive Video

Physics

9th - 10th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

The video explains how electromagnetic induction is used in AC generators. It describes the structure of an AC generator, which includes a coil that rotates within a magnetic field. The video details the working principle, showing how the coil's movement induces an electromotive force (emf) and generates alternating current. It also explains the direction of current flow and how it changes with the coil's rotation, completing a cycle every 360 degrees.

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5 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary function of an AC generator?

To convert electrical energy into mechanical energy

To convert mechanical energy into electrical energy

To store electrical energy

To amplify electrical signals

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the initial position of the coil in an AC generator, what is the value of the induced emf?

Maximum

Negative peak

Zero

Constant

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

According to Fleming's left-hand rule, what is the direction of the induced emf in the arm PQ when the coil starts moving?

From R to S

From S to R

From P to Q

From Q to P

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the value of the induced emf as the coil aligns itself perpendicularly to the magnetic field?

It remains constant

It reaches its negative peak

It becomes zero

It reaches its maximum

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How does the direction of current change after every half rotation of the coil in an AC generator?

It remains the same

It reverses

It becomes zero

It doubles

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