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Byju's Answer

Standard XII

Physics

Variation of G Due to Height and Depth

The magnitude...

Question

The magnitude of the force required to move the conducting rod at constant speed $5 c m / s$ at the same instant $t = 2 s$ , is equal to

0.096 N

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0.12 N

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0.08 N

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0.64 N

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Solution

The correct option is C $0.08 N$
$i = \frac{e_{n e t}}{R}$
$= \frac{0.8}{(1) (30 + 30 + 20) \times 10^{- 2}} = 0.1 A$

$F = i B = (0.1) (0.2) (4) = 0.08 N$

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Similar questions

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The magnitude of the force required to move the conducting rod at constant speed 5cm/s at the same instant t=2s, is equal to

The correct option is C 0.08Ni=enetR=0.8(1)(30+30+20)×10−2=0.1AF=iB=(0.1)(0.2)(4)=0.08N

The magnitude of the force required to move the conducting rod at constant speed $5 c m / s$ at the same instant $t = 2 s$ , is equal to

The correct option is C $0.08 N$
$i = \frac{e_{n e t}}{R}$
$= \frac{0.8}{(1) (30 + 30 + 20) \times 10^{- 2}} = 0.1 A$

$F = i B = (0.1) (0.2) (4) = 0.08 N$