In the circuit diagram, a transformer is being used to change the mains voltage to a lower value so that it will light a 12 V amp. The primary coil has 1000 turns, Calculate how many turns the secondary coil has.

Here, we have to use the following formula of the voltage and number of turns in relation V o u t V i n = N s N p 12 120 = N s 1000 N s = 12 120 × 1000 N s = 100

EASY

Earn 100

Define transmission loss.

Important Questions on Electromagnetic Induction

EASY

Science>Physics>Electromagnetic Induction>Power Transmission and Distribution

Write any two problems faced when electrical power is transmitted to distant places.

MEDIUM

Science>Physics>Electromagnetic Induction>Power Transmission and Distribution

A step-up transformer has

2000

turns on one coil and

5000

on the other. Calculate the ratio

\frac{N_{P}}{N_{S}}

for this transformer.

EASY

Science>Physics>Electromagnetic Induction>Power Transmission and Distribution

Where do we get electricity from?

MEDIUM

Science>Physics>Electromagnetic Induction>Power Transmission and Distribution

Define power transmission.

EASY

Science>Physics>Electromagnetic Induction>Power Transmission and Distribution

Write a short note on transformers.

HARD

Science>Physics>Electromagnetic Induction>Power Transmission and Distribution

In the circuit diagram, a transformer is being used to change the mains voltage to a lower value so that it will light a $12 V$ amp.

Question Image

The primary coil has $1000$ turns, Calculate how many turns the secondary coil has.

EASY

Science>Physics>Electromagnetic Induction>Power Transmission and Distribution

This power plant uses heat energy to generate electricity.

EASY

Science>Physics>Electromagnetic Induction>Power Transmission and Distribution

Transformer works on

EASY

Science>Physics>Electromagnetic Induction>Power Transmission and Distribution

In an experiment, a student wants to use a transformer to convert a primary voltage of

3 V

a .c. to a secondary voltage of

10 V

a.c. They have coils with

100, 150, 200, 500, 1, 000, 1, 500 a n d 2, 000

turns available to make into the transformer. Which coils should they use?

HARD

Science>Physics>Electromagnetic Induction>Power Transmission and Distribution

Explain power transmission process.

MEDIUM

Science>Physics>Electromagnetic Induction>Power Transmission and Distribution

Why a step-up type of transformer is used in power stations?

EASY

Science>Physics>Electromagnetic Induction>Power Transmission and Distribution

Define power transmission.

EASY

Science>Physics>Electromagnetic Induction>Power Transmission and Distribution

In an experiment, a student wants to use a transformer to convert a primary voltage of

3 V

a .c. to a secondary voltage of

10 V

a.c. They have coils with

100, 150, 200, 500, 1, 000, 1, 500 a n d 2, 000

turns available to make into the transformer. Why would this not work with a d.c voltage?

EASY

Science>Physics>Electromagnetic Induction>Power Transmission and Distribution

Inverters and generators are _____ giving devices.

(Choose from the following: electricity/ magnetic energy)

MEDIUM

Science>Physics>Electromagnetic Induction>Power Transmission and Distribution

Electrical power is often transmitted over long distances in high-voltage power lines (cables). Transformers are used to increase the voltage provided by the power station and to reduce the voltage for the final user. A transformer has