Four charges are placed at circumference of dial of a clock as shown in figure. If clock has only ho

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1. Electric Charges and Fields

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Four charges are placed at the circumference of the dial of a clock as shown in figure. If the clock has only hour hand, then the resultant force on a positive charge $q_0$ placed at the centre, points in the direction which shows the time as

A

$1:30$

B

$7:30$

C

$4:30$

D

$10:30$

Solution

Where $F=\frac{k q^{2}}{r^{2}}$

$F_{n e t}=\sqrt{(2 F)^{2}+(2 F)^{2}}$

Between $6: 00$ and $9: 00$

Time $=7: 30$

Standard 12

Physics

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