Which physical quantity has a unit of $kWh$ ?
Which physical quantity has a unit of $kWh$ ?
- A
Electric Power
- B
Work
- C
Electric current
- D
Electric potential
Similar Questions
Three $V -I$ graphs are drawn individually for two resistors and their series combination. Out of $A, B,C$ which one represents the graph for series combination of the other two. Give reason for your answer.
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A $4\, \Omega$ resistance wire is doubled on itself. Calculate the new resistance of the wire.
$(a)$ Nichrome wire of length $L^{\prime}$ and radius ${ }^{\prime} R^{\prime}$ has resistance of $10\, \Omega$. How would the resistance of the wire change when
$(i)$ only length of the wire is doubled ?
$(ii)$ only diameter of the wire is doubled ? Justify your answer.
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$(a)$ Nichrome wire of length $L^{\prime}$ and radius ${ }^{\prime} R^{\prime}$ has resistance of $10\, \Omega$. How would the resistance of the wire change when
$(i)$ only length of the wire is doubled ?
$(ii)$ only diameter of the wire is doubled ? Justify your answer.
$(b)$ Why element of electrical heating devices are made$-$up of alloys ?
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