A transformer contains 100 and 150 turns in its primary and secondary coils, respectively.

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Ques: The transformer is

Step up transformer
Step down transformer

A transformer is a device used to transfer electrical energy from one circuit to another through mutual induction. The basic principle of transformer operation is that a changing magnetic field in one coil induces an electromotive force (EMF) in a neighboring coil.

In a step-up transformer, the secondary coil has more turns than the primary coil, resulting in an increase in the output voltage. In the given transformer, the primary coil has 100 turns while the secondary coil has 150 turns. This means that the voltage in the secondary coil will be greater than the voltage in the primary coil.

When an AC current flows through the primary coil, it creates a changing magnetic field that induces a voltage in the secondary coil. The induced voltage is directly proportional to the number of turns in the secondary coil. Since the secondary coil has more turns than the primary coil, the induced voltage in the secondary coil is higher than the voltage applied to the primary coil. This is how the transformer acts as a step-up transformer.

For example, if the input voltage is 120 volts and the transformer has a turns ratio of 1:1.5 (100 turns in the primary coil and 150 turns in the secondary coil), the output voltage would be:

Output Voltage = Input Voltage x (Number of turns in secondary coil / Number of turns in primary coil)

Output Voltage = 120V x (150/100)

Output Voltage = 180V

Thus, the output voltage is increased from 120V to 180V, making it a step-up transformer.

Step Up Transformer

Also check:

Relevant Concepts
Power Transformers	Magnetic Induction Formula	Uses of Transformers
Induced Electromotive Force and Current	Types of Circuits	Ohm's Law

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A transformer contains 100 and 150 turns in its primary and secondary coils, respectively.

CBSE CLASS XII Related Questions

1.
If Bohr’s quantization postulate (angular momentum \( = \frac{nh}{2\pi} \)) is a basic law of nature, it should be equally valid for the case of planetary motion also. Why, then, do we never speak of quantization of orbits of planets around the Sun? Explain.

2.
Draw a circuit diagram of a full-wave rectifier using p-n junction diodes. Explain its working and show the input-output waveforms.

3.
Two small identical metallic balls having charges \( q \) and \( -2q \) are kept far at a separation \( r \). They are brought in contact and then separated at distance \( \frac{r}{2} \). Compared to the initial force \( F \), they will now:

4.
The figure shows three point charges kept at the vertices of triangle ABC. The net electric field, due to this system of charges, at the midpoint M of base BC will be:

5.
If both the number of protons and the neutrons are conserved in each nuclear reaction, in what way is mass converted into energy (or vice versa) in a nuclear reaction? Explain.

6.
Draw the number of scattered particles versus the scattering angle graph for scattering of alpha particles by a thin foil. Write two important conclusions that can be drawn from this plot.

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A transformer contains 100 and 150 turns in its primary and secondary coils, respectively.

CBSE CLASS XII Related Questions

1. If Bohr’s quantization postulate (angular momentum \( = \frac{nh}{2\pi} \)) is a basic law of nature, it should be equally valid for the case of planetary motion also. Why, then, do we never speak of quantization of orbits of planets around the Sun? Explain.

2.Draw a circuit diagram of a full-wave rectifier using p-n junction diodes. Explain its working and show the input-output waveforms.

3.Two small identical metallic balls having charges \( q \) and \( -2q \) are kept far at a separation \( r \). They are brought in contact and then separated at distance \( \frac{r}{2} \). Compared to the initial force \( F \), they will now:

4.The figure shows three point charges kept at the vertices of triangle ABC. The net electric field, due to this system of charges, at the midpoint M of base BC will be:

5. If both the number of protons and the neutrons are conserved in each nuclear reaction, in what way is mass converted into energy (or vice versa) in a nuclear reaction? Explain.

6. Draw the number of scattered particles versus the scattering angle graph for scattering of alpha particles by a thin foil. Write two important conclusions that can be drawn from this plot.

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
If Bohr’s quantization postulate (angular momentum \( = \frac{nh}{2\pi} \)) is a basic law of nature, it should be equally valid for the case of planetary motion also. Why, then, do we never speak of quantization of orbits of planets around the Sun? Explain.

2.
Draw a circuit diagram of a full-wave rectifier using p-n junction diodes. Explain its working and show the input-output waveforms.

3.
Two small identical metallic balls having charges \( q \) and \( -2q \) are kept far at a separation \( r \). They are brought in contact and then separated at distance \( \frac{r}{2} \). Compared to the initial force \( F \), they will now:

4.
The figure shows three point charges kept at the vertices of triangle ABC. The net electric field, due to this system of charges, at the midpoint M of base BC will be:

5.
If both the number of protons and the neutrons are conserved in each nuclear reaction, in what way is mass converted into energy (or vice versa) in a nuclear reaction? Explain.

6.
Draw the number of scattered particles versus the scattering angle graph for scattering of alpha particles by a thin foil. Write two important conclusions that can be drawn from this plot.