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Physics - Current Electricity Question with Solution | TestHub

PhysicsCurrent ElectricityEquivalent ResistanceEasy2 minPYQ_2020

PhysicsEasysingle choice

A solid metallic cuboid of homogeneous material having geometrical dimension as shown in the figure will have a ratio of resistances for the sense of current along $x$ , $y$ and $z$ directions respectively, equal to

Options:

Answer:

Solution:

$R_{X} = \frac{ρ a}{b c}$

$R_{Y} = \frac{ρ c}{a b}$

$R_{Z} = \frac{ρ b}{a c}$

$R_{X} : R_{Y} : R_{Z} = \frac{a}{b c} : \frac{c}{a b} : \frac{b}{a c}$

$a^{2} : c^{2} : b^{2}$ (multiply each ratio by $a b c$ )

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:Current ElectricitySubtopic:Equivalent Resistance

⏱ 2mℹ️ Source: PYQ_2020

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