If C,R,L and I denote capacitance, resistance, inductance and electric current respectively, then the quantities having the same dimensions of time are a) CR b) L/R c) √LC d) LI2
A
a and b only
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B
a and c only
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C
a and d only
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D
a, b and c only
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Solution
The correct option is D a, b and c only
C=M−1L−2I2T4
R=ML2I−2T−3
L=ML2I−2T−2 I=I1 CR=T LR=T √LC=T LI2=ML2T−2 Hence a, b, c have some dimension of time t.