1. Electric Charges and Fields
hard

$10\,cm$ બાજુવાળા સમબાજુ ત્રિકોણ $ABC$ ના શિરોબિંદુ પર અનુક્રમે $1\,\mu C$ , $-1\,\mu C$ અને $2\,\mu C$ વિદ્યુતભાર મૂકતાં $C$ પર રહેલ વિદ્યુતભાર પર કેટલા .....$N$ બળ લાગે?

A

$0.9 $

B

$1.8$

C

$2.7 $

D

$3.6$

Solution

(b) $F_A$ = force on $C$ due to charge placed at $A$
$ = 9 \times {10^9} \times \frac{{{{10}^{ – 6}} \times 2 \times {{10}^{ – 6}}}}{{{{(10 \times {{10}^{ – 2}})}^2}}} = 1.8\,N$
$F_B$ = force on $C$ due to charge placed at $B$
$ = 9 \times {10^9} \times \frac{{{{10}^{ – 6}} \times 2 \times {{10}^{ – 6}}}}{{{{(0.1)}^2}}} = 1.8\,N$
Net force on $C$
${F_{net}} = \sqrt {{{({F_A})}^2} + {{({F_B})}^2} + 2{F_A}{F_B}\cos {{120}^o}} = 1.8\,N$

Standard 12
Physics

Similar Questions

Start a Free Trial Now

Confusing about what to choose? Our team will schedule a demo shortly.