Three identical bulbs, B1, B2 and B3 connected. Current of 3A is recorded by the ammeter when the bulbs glow.

Three identical bulbs, B1, B2 and B3 connected. A current of 3A is recorded by the ammeter when the bulbs glow. What happens when:

To the glow of the other two bulbs when one of them gets fused?

Assuming that B₁ is fused, there supposedly will be no impact on the other two bulbs. The two bulbs will remain the same since they are dependent on the power. This happens because the potential difference and resistance of the other two bulbs remain the same, and do not get affected by an external fuse of another bulb.

To the reading of A1, A2, A3 and A when the bulb B2 gets fused?

Considering that there are parallel connections, the net resistance should be:

1/R = 1/R₁+ 1/R₂+ 1/R₃

Now, since the resistance remains same, thus, R’ = R/3

Hence, according to Ohm’s Law,

V = IR

Thus,

R = 4.5Ω

Assuming that B₂ is fused, two bulbs, B₁ and B₃, remain parallel

Therefore, the net resistance in parallel combination is = 1/R’ = 2/R

⇒ R’ = 4.5/2 Ω

⇒ I = V/R’

⇒ I = 2 × 4.5 / 4.5

⇒ I = 2A

The distribution of current in both the bulbs will be1 A each.

How much power is dissipated in the circuit when all the three bulbs glow together?

The amount of power that is dissipated when all the three bulbs glow together:

P = V × I

Therefore, after replacing the values, we get,

P= 4.5 × 3

⇒ P = 13.5 W

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Three identical bulbs, B1, B2 and B3 connected. Current of 3A is recorded by the ammeter when the bulbs glow.

To the glow of the other two bulbs when one of them gets fused?

To the reading of A1, A2, A3 and A when the bulb B2 gets fused?

How much power is dissipated in the circuit when all the three bulbs glow together?

CBSE CLASS XII Related Questions

1.
Two point charges -Q and Q are located at points (d, 0) and (0, d) respectively, in x-y plane. The electric field E at the origin will be:

2.
Find the ratio $\dfrac{\lambda_\alpha}{\lambda_p}$ of the de Broglie wavelength $\lambda_\alpha$ associated with an alpha particle to the de Broglie wavelength $\lambda_p$ associated with a proton if both are moving with the same velocity.

3.
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.

4.
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.

5.
Consider the nuclear reaction \( X \to Y + Z \). Let \( M_x \), \( M_y \), and \( M_z \) be the masses of the three nuclei X, Y, and Z respectively. Then which of the following relations hold true?

Similar Physics Concepts

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Three identical bulbs, B1, B2 and B3 connected. Current of 3A is recorded by the ammeter when the bulbs glow.

To the glow of the other two bulbs when one of them gets fused?

To the reading of A1, A2, A3 and A when the bulb B2 gets fused?

How much power is dissipated in the circuit when all the three bulbs glow together?

CBSE CLASS XII Related Questions

1.Two point charges -Q and Q are located at points (d, 0) and (0, d) respectively, in x-y plane. The electric field E at the origin will be:

2.Find the ratio $\dfrac{\lambda_\alpha}{\lambda_p}$ of the de Broglie wavelength $\lambda_\alpha$ associated with an alpha particle to the de Broglie wavelength $\lambda_p$ associated with a proton if both are moving with the same velocity.

3.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.

4.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.

5.Consider the nuclear reaction \( X \to Y + Z \). Let \( M_x \), \( M_y \), and \( M_z \) be the masses of the three nuclei X, Y, and Z respectively. Then which of the following relations hold true?

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
Two point charges -Q and Q are located at points (d, 0) and (0, d) respectively, in x-y plane. The electric field E at the origin will be:

2.
Find the ratio $\dfrac{\lambda_\alpha}{\lambda_p}$ of the de Broglie wavelength $\lambda_\alpha$ associated with an alpha particle to the de Broglie wavelength $\lambda_p$ associated with a proton if both are moving with the same velocity.

3.
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.

4.
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.

5.
Consider the nuclear reaction \( X \to Y + Z \). Let \( M_x \), \( M_y \), and \( M_z \) be the masses of the three nuclei X, Y, and Z respectively. Then which of the following relations hold true?