Since, alloys have higher melting point than pure metal so coils of electric toasters and electric irons are made of an alloy rather than a pure metal to retain more heat without melting.
Since, alloys have higher melting point than pure metal so coils of electric toasters and electric irons are made of an alloy rather than a pure metal to retain more heat without melting.
Since Resistance (R) = PotentialDifference(V)/Electriccurrent(I) Therefore, if potential difference between two ends of the component will be halved, and resistance remains constant, then electric current would also be halved.
Since Resistance (R) = PotentialDifference(V)/Electriccurrent(I)
Therefore, if potential difference between two ends of the component will be halved, and resistance remains constant, then electric current would also be halved.
Since, resistance is indirectly proportional to the area of cross section, thus current flows easily through a thick wire compared to a thin wire of the same material.
Since, resistance is indirectly proportional to the area of cross section, thus current flows easily through a thick wire compared to a thin wire of the same material.
Given, Charge Q = 1C, Potential difference, V = 6V Therefore, Energy i.e. Work done, W =? We know that, V = W/Q Therefore, 6V = W/1C ⇒ W = 6V × 1C = 6J Thus, required energy = 6J
Given, Charge Q = 1C, Potential difference, V = 6V
Therefore, Energy i.e. Work done, W =?
We know that, V = W/Q
Therefore, 6V = W/1C ⇒ W = 6V × 1C = 6J
Thus, required energy = 6J
We know that charge over 1 electron = 1.6 × 10–19 coulomb Thus, 1.6 × 10–19 C of charge = 1 electron Therefore, 1 C of charge = 1/ (1.6 × 10–19) Electrons = 1019/1.6 electrons = 10×1018/1.6 electrons = 6.25 × 1018 electrons
We know that charge over 1 electron = 1.6 × 10–19 coulomb
Thus, 1.6 × 10–19 C of charge = 1 electron
Therefore, 1 C of charge = 1/ (1.6 × 10–19) Electrons
= 1019/1.6 electrons = 10×1018/1.6 electrons = 6.25 × 1018 electrons
SI unit of electric current is ampere (A). Ampere is the flow of electric charges through a surface at the rate of one coulomb per second, i.e. if 1 coulomb of electric charge flows through a cross section for 1 second, it would be equal to 1 ampere. Therefore, 1 ampere = 1C/1s
SI unit of electric current is ampere (A).
Ampere is the flow of electric charges through a surface at the rate of one coulomb per second, i.e. if 1 coulomb of electric charge flows through a cross section for 1 second, it would be equal to 1 ampere.
Therefore, 1 ampere = 1C/1s
Use the data in Table 12.2 to answer the following –
(a) Iron (b)Silver
(a) Iron
(b)Silver
See lessWhy are coils of electric toasters and electric irons made of an alloy rather than a pure metal?
Since, alloys have higher melting point than pure metal so coils of electric toasters and electric irons are made of an alloy rather than a pure metal to retain more heat without melting.
Since, alloys have higher melting point than pure metal so coils of electric toasters and electric irons are made of an alloy rather than a pure metal to retain more heat without melting.
See lessLet the resistance of an electrical component remains constant while the potential difference across the two ends of the component decreases to half of its former value. What change will occur in the current through it?
Since Resistance (R) = PotentialDifference(V)/Electriccurrent(I) Therefore, if potential difference between two ends of the component will be halved, and resistance remains constant, then electric current would also be halved.
Since Resistance (R) = PotentialDifference(V)/Electriccurrent(I)
Therefore, if potential difference between two ends of the component will be halved, and resistance remains constant, then electric current would also be halved.
See lessWill current flow more easily through a thick wire or a thin wire of the same material, when connected to the same source? Why?
Since, resistance is indirectly proportional to the area of cross section, thus current flows easily through a thick wire compared to a thin wire of the same material.
Since, resistance is indirectly proportional to the area of cross section, thus current flows easily through a thick wire compared to a thin wire of the same material.
See lessOn what factors does the resistance of a conductor depend?
Resistance of a conductor depends upon: (a) Nature of conductor (b) Length of conductor (c) Area of cross section of conductor
Resistance of a conductor depends upon:
(a) Nature of conductor
See less(b) Length of conductor
(c) Area of cross section of conductor
How much energy is given to each coulomb of charge passing through a 6 V battery?
Given, Charge Q = 1C, Potential difference, V = 6V Therefore, Energy i.e. Work done, W =? We know that, V = W/Q Therefore, 6V = W/1C ⇒ W = 6V × 1C = 6J Thus, required energy = 6J
Given, Charge Q = 1C, Potential difference, V = 6V
Therefore, Energy i.e. Work done, W =?
See lessWe know that, V = W/Q
Therefore, 6V = W/1C
⇒ W = 6V × 1C = 6J
Thus, required energy = 6J
What is meant by saying that the potential difference between two points is 1 V?
This means 1 joule of work is done to move a charge of 1 coulomb between two points.
This means 1 joule of work is done to move a charge of 1 coulomb between two points.
See lessName a device that helps to maintain a potential difference across a conductor.
Battery or a cell
Battery or a cell
See lessCalculate the number of electrons constituting one coulomb of charge.
We know that charge over 1 electron = 1.6 × 10–19 coulomb Thus, 1.6 × 10–19 C of charge = 1 electron Therefore, 1 C of charge = 1/ (1.6 × 10–19) Electrons = 1019/1.6 electrons = 10×1018/1.6 electrons = 6.25 × 1018 electrons
We know that charge over 1 electron = 1.6 × 10–19 coulomb
Thus, 1.6 × 10–19 C of charge = 1 electron
See lessTherefore, 1 C of charge = 1/ (1.6 × 10–19) Electrons
= 1019/1.6 electrons = 10×1018/1.6 electrons = 6.25 × 1018 electrons
Define the unit of current.
SI unit of electric current is ampere (A). Ampere is the flow of electric charges through a surface at the rate of one coulomb per second, i.e. if 1 coulomb of electric charge flows through a cross section for 1 second, it would be equal to 1 ampere. Therefore, 1 ampere = 1C/1s
SI unit of electric current is ampere (A).
Ampere is the flow of electric charges through a surface at the rate of one coulomb per second, i.e. if 1 coulomb of electric charge flows through a cross section for 1 second, it would be equal to 1 ampere.
See lessTherefore, 1 ampere = 1C/1s