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.
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