Electric bulb was invented by

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The electric bulb was invented by Thomas Edison in 1879. He created a bulb with a filament made of carbonized bamboo that could burn for over 1000 hours. This invention greatly improved upon earlier versions of the light bulb and greatly contributed to the widespread use of electric lighting. Edison's bulb design helped lay the foundation for the modern electrical power system.

The electric bulb was invented to provide a more efficient and practical source of artificial light compared to existing sources such as candles, oil lamps, and gas lights. The invention of the electric bulb revolutionized the way people lived, worked, and communicated and had a profound impact on the modern world. A bulb is made up of 3 parts: filament, glass, and base.

Thomas Edison

Thomas Edison

Uses of Electronic Bulb

Some of the major uses of electronic bulbs are as follows:

It's found in automotive headlights and vehicle lights.
It's utilized in table lamps and other portable illumination.
It's utilized for both residential and commercial lighting.
It's utilized in advertising and decorative lighting.

Important Questions on Current Electricity

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CBSE CLASS XII Related Questions

1.
Two air-filled capacitors of capacitances $C_1$ and $C_2$ are connected in parallel with a dc battery. After the capacitors are fully charged, a slab of dielectric constant K is inserted between the plates of each capacitor. How will the (i) charge on each capacitor and (ii) energy stored in the capacitor affected after the slab is introduced.

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2.
The resistance of a metal wire at $ 20^\circ \text{C} $ is $ 1.05 \, \Omega $ and at $ 100^\circ \text{C} $ is $ 1.38 \, \Omega $. Determine the temperature coefficient of resistivity of this metal.

View Solution

3.
This ‘average velocity’ is found be few mm/s for currents in range of a few amperes. How then is current established almost the instant a circuit is closed ?

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4.
A charged particle $+q$ in an electric field $\vec{E}$ experiences a force in the direction of the electric field. As a result, its kinetic energy changes. Similarly, the charged particle also experiences a force when it moves in a magnetic field $\vec{B}$. But this magnetic force is perpendicular to both velocity $\vec{v}$ of the charged particle and the magnetic field $\vec{B}$, so it cannot change the kinetic energy of the charged particle. Consider two charged particles 1 and 2 of masses $m$ and $\frac{m}{2}$ having charges $-q$ and $+2q$ respectively. They are accelerated from rest through the same potential difference $V$ and acquire kinetic energy $K_1$ and $K_2$. Then they enter in a region of uniform magnetic field $\vec{B}$ perpendicular to their velocities.

5.
A student sets up the circuit as shown in the figure to find the value of unknown resistance X and records a set of readings of the voltmeter and the ammeter by using the rheostat.

6.
With the help of a labelled diagram, explain the principle, construction and working of an a.c. generator.

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Electric bulb was invented by

Uses of Electronic Bulb

Important Questions on Current Electricity

CBSE CLASS XII Related Questions

2.
The resistance of a metal wire at \( 20^\circ \text{C} \) is \( 1.05 \, \Omega \) and at \( 100^\circ \text{C} \) is \( 1.38 \, \Omega \). Determine the temperature coefficient of resistivity of this metal.

3.
This ‘average velocity’ is found be few mm/s for currents in range of a few amperes. How then is current established almost the instant a circuit is closed ?

5.
A student sets up the circuit as shown in the figure to find the value of unknown resistance X and records a set of readings of the voltmeter and the ammeter by using the rheostat.

6.
With the help of a labelled diagram, explain the principle, construction and working of an a.c. generator.

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Electric bulb was invented by

Uses of Electronic Bulb

Important Questions on Current Electricity

CBSE CLASS XII Related Questions

2. The resistance of a metal wire at \( 20^\circ \text{C} \) is \( 1.05 \, \Omega \) and at \( 100^\circ \text{C} \) is \( 1.38 \, \Omega \). Determine the temperature coefficient of resistivity of this metal.

3.This ‘average velocity’ is found be few mm/s for currents in range of a few amperes. How then is current established almost the instant a circuit is closed ?

5.A student sets up the circuit as shown in the figure to find the value of unknown resistance X and records a set of readings of the voltmeter and the ammeter by using the rheostat.

6.With the help of a labelled diagram, explain the principle, construction and working of an a.c. generator.

Comments

SUBSCRIBE TO OUR NEWS LETTER

2.
The resistance of a metal wire at \( 20^\circ \text{C} \) is \( 1.05 \, \Omega \) and at \( 100^\circ \text{C} \) is \( 1.38 \, \Omega \). Determine the temperature coefficient of resistivity of this metal.

3.
This ‘average velocity’ is found be few mm/s for currents in range of a few amperes. How then is current established almost the instant a circuit is closed ?

5.
A student sets up the circuit as shown in the figure to find the value of unknown resistance X and records a set of readings of the voltmeter and the ammeter by using the rheostat.

6.
With the help of a labelled diagram, explain the principle, construction and working of an a.c. generator.