What are the applications of ohm's law used in daily life?

Ohm’s law states that voltage across a conductor is proportional to the current flowing through it, provided all physical conditions and temperature stays constant.

Applications of Ohm’s law in daily life

The speed of fans in our houses can be regulated by shifting the regulator too and fro. The current flowing through the fan is managed by controlling the resistance through the regulator. The resistance, current, and power can therefore be calculated by Ohm’s law for any input value.
Electric kettles and irons contain a lot of resistors that restrict the flow of current through them to produce heat. The size of resistors can be defined by Ohm’s law.
Electrical heaters contain a metal coil of high resistance allowing a specific amount of current to pass through to provide the heat. The power of heaters can be determined through Ohm’s law.

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CBSE CLASS XII Related Questions

1.
In a telescope the objective has much larger aperture than the eye piece. Why ?

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2.
If T is the time period of the rotation of the coil, at what values of t in a cycle, the emf generator is maximum ?

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3.
Capacitors are manufactured with certain standard capacitances and working voltages. However, these standard values may not be the ones that are actually needed in a particular application. Two or more capacitors can be grouped in series or in parallel to achieve desired capacitance and voltage. When connected in series, the total capacitance decreases while the voltage rating increases, whereas in parallel connections, the total capacitance increases and maintains the same voltage rating. A capacitor stores energy in the electric field between its plates and stored energy is proportional to the square of the voltage and capacitance $U = \frac{1}{2}CV^2$, where symbols have their usual meanings.
Two capacitors, one of $3 \ \mu$F and the other of $6 \ \mu$F, are connected in series in the circuit as shown in the figure, for a long time. }

4.
Read the following paragraph and answer the questions that follow.
A p-type or n-type semiconductor can be converted into a p-n junction by doping it with suitable impurity. The motion of majority charge carriers causes diffusion current across the junction while the barrier electric field causes motion of minority carriers for drift current. In case of unbiased diode, the diffusion and drift currents are equal. This equilibrium is disturbed by the biasing batteries. Diodes, therefore, allow currents in one direction. This property of diode is used in making rectifiers.

5.
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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6.
Two copper wires having their radii in the ratio of 3 : 2 are connected in series across a battery. Find the ratio of the drift velocities of the electrons in the wires.

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What are the applications of ohm's law used in daily life?

Applications of Ohm’s law in daily life

Related Questions

CBSE CLASS XII Related Questions

1.
In a telescope the objective has much larger aperture than the eye piece. Why ?

2.
If T is the time period of the rotation of the coil, at what values of t in a cycle, the emf generator is maximum ?

6.
Two copper wires having their radii in the ratio of 3 : 2 are connected in series across a battery. Find the ratio of the drift velocities of the electrons in the wires.

Similar Physics Concepts

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What are the applications of ohm's law used in daily life?

Applications of Ohm’s law in daily life

Related Questions

CBSE CLASS XII Related Questions

1.In a telescope the objective has much larger aperture than the eye piece. Why ?

2.If T is the time period of the rotation of the coil, at what values of t in a cycle, the emf generator is maximum ?

6.Two copper wires having their radii in the ratio of 3 : 2 are connected in series across a battery. Find the ratio of the drift velocities of the electrons in the wires.

Similar Physics Concepts

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
In a telescope the objective has much larger aperture than the eye piece. Why ?

2.
If T is the time period of the rotation of the coil, at what values of t in a cycle, the emf generator is maximum ?

6.
Two copper wires having their radii in the ratio of 3 : 2 are connected in series across a battery. Find the ratio of the drift velocities of the electrons in the wires.