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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In a region, the electric potential varies as $V = 10 - 50x$, where $V$ is in volts and $x$ is in meters. The electric field in the region is

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A wire of length $L$ is bent round into (i) a square coil having $N$ turns and (ii) a circular coil having $N$ turns. The coil in both cases is free to turn about a vertical axis coinciding with the plane of the coil, in a uniform, horizontal magnetic field and carry the same currents. Find the ratio of the maximum value of the torque acting on the square coil to that on the circular coil.

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

CBSE CLASS XII Related Questions

1.
In a region, the electric potential varies as \(V = 10 - 50x\), where \(V\) is in volts and \(x\) is in meters. The electric field in the region is

2.
An electron is revolving around a proton in a circular orbit of radius $r$. Using classical physics, prove that the ratio of value of the angular momentum and the value of magnetic moment of electron revolving in the orbit is a constant.

3.
A current of \(4.0\,\text{A}\) flows through a wire of length \(1\,\text{m}\) and cross-sectional area \(1.0\,\text{mm}^2\), when a potential difference of \(2\,\text{V}\) is applied across its ends. Calculate the resistivity of the material of the wire.

4.
The number of free electrons per unit volume ($\text{m}^3$) in a wire made of copper (resistivity $1.72 \times 10^{-8}\,\Omega\,\text{m}$) is $8.5 \times 10^{28}$. Calculate the average number of collisions made by an electron in one second when an electric field is maintained in the wire.

5.
A square loop of side 0.50 m is placed in a uniform magnetic field of 0.4 T perpendicular to the plane of the loop. The loop is rotated through an angle of $60^\circ$ in 0.2 s. The value of emf induced in the loop will be:

Similar Physics Concepts

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

CBSE CLASS XII Related Questions

1.In a region, the electric potential varies as \(V = 10 - 50x\), where \(V\) is in volts and \(x\) is in meters. The electric field in the region is

2.An electron is revolving around a proton in a circular orbit of radius $r$. Using classical physics, prove that the ratio of value of the angular momentum and the value of magnetic moment of electron revolving in the orbit is a constant.

3.A current of \(4.0\,\text{A}\) flows through a wire of length \(1\,\text{m}\) and cross-sectional area \(1.0\,\text{mm}^2\), when a potential difference of \(2\,\text{V}\) is applied across its ends. Calculate the resistivity of the material of the wire.

4.The number of free electrons per unit volume ($\text{m}^3$) in a wire made of copper (resistivity $1.72 \times 10^{-8}\,\Omega\,\text{m}$) is $8.5 \times 10^{28}$. Calculate the average number of collisions made by an electron in one second when an electric field is maintained in the wire.

5.A square loop of side 0.50 m is placed in a uniform magnetic field of 0.4 T perpendicular to the plane of the loop. The loop is rotated through an angle of $60^\circ$ in 0.2 s. The value of emf induced in the loop will be:

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
In a region, the electric potential varies as \(V = 10 - 50x\), where \(V\) is in volts and \(x\) is in meters. The electric field in the region is

2.
An electron is revolving around a proton in a circular orbit of radius $r$. Using classical physics, prove that the ratio of value of the angular momentum and the value of magnetic moment of electron revolving in the orbit is a constant.

3.
A current of \(4.0\,\text{A}\) flows through a wire of length \(1\,\text{m}\) and cross-sectional area \(1.0\,\text{mm}^2\), when a potential difference of \(2\,\text{V}\) is applied across its ends. Calculate the resistivity of the material of the wire.

4.
The number of free electrons per unit volume ($\text{m}^3$) in a wire made of copper (resistivity $1.72 \times 10^{-8}\,\Omega\,\text{m}$) is $8.5 \times 10^{28}$. Calculate the average number of collisions made by an electron in one second when an electric field is maintained in the wire.

5.
A square loop of side 0.50 m is placed in a uniform magnetic field of 0.4 T perpendicular to the plane of the loop. The loop is rotated through an angle of $60^\circ$ in 0.2 s. The value of emf induced in the loop will be: