Question

Five charges of equal amount 2q are placed at five corners of a regular hexagon of side 5cm. What will be the value of the sixth charge placed at sixth corner of hexagon so that the electric field at thecentre of hexagon is zero? *

1 point

2q

q

0

-2q

 

This is a required question

Q.15 A charge of 20 µC is given to a conducting sphere of radius 15cm. What is E at its centre ? *

1 point

4.6x10^6 N/C

1.8x10^6 N/C

0.9x10^6 N/C

zero

Q.2 In a conducting wire carrying a current I, the drift velocity of the free electrons is v. In a wire of the same metal but that of double the radius, the current be 2I then the drift velocity of the electrons will be:*

1 point

v

v/4

v/2

4v

Name of the student *

Q.20 *

1 point



Both are negative

Both are positive

q1 is positive but q2 is negative

q1 is negative but q2 is positive

Q.10 A positive charge of 100µC is placed at a point. The potential at a distance of 9m due to this will be (in volts) *

1 point

10^ 7

10^ 4

10^ 6

10^ 5

Class *

Section *

Q.11 The angle between the electric lines of force and an equipotential surface (in degree) is: *

1 point

90

0

180

45

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Answer 1

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