elec -2

AIEEE 2015 Online › Electricity and magnetism questions › elec -2

the elecric potential decreases uniformly from 120V to 80 V as one moves on the x-axis from x=-1 to x= +1cm . the electric field at the origin
(a) must be equal to 20 V/cm
(b) may be equal to 20V/cm
(c) may be greater than 20 V/cm
(d) may be less than 20V/cm

give reason also

#Physics #Electricity and magnetism

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3 Answers

49

Subhomoy Bakshi ·2010-09-12 12:02:26

ans is (b)

if the field is in x direction only,

then it is -dV/dx i.e. 20V/m

but if the electric field has non-zero y or/and z component then the answer is not 20 V/m

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1

mohit sengar ·2010-09-12 12:04:45

ans is (b) and (c)

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49

Subhomoy Bakshi ·2010-09-12 12:42:36

yea right...

c also!!!

same reasons!!

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Your Answer

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