Physics, asked by rexrose128, 9 months ago

two balls carrying changes of +3uC and
-3uC attract each other with a force F. If
a charge of +3uC is added to both the
force between the balls will be
a) F/2 b)F c) zero d) 2F​
plz answer fast

Answers

Answered by Anonymous
13

\large{\underline{\underline{\mathfrak{Answer :}}}}

Force between balls will be (c) zero

_______________________

\underline{\underline{\mathfrak{Step-By-Step-Explanation :}}}

Initially :

  • 1st Charge (Q1) = +3μC
  • 2nd Charge (Q2) = -3μC
  • Force = F

Finally :

  • 1st Charge (Q1') = +3μC + 3μC = 6μC
  • 2nd Charge (Q2') = -3μC + 3μC = 0μC
  • let distance between balls (d) = x

Use Coulomb's Law for Final charges :

\large{\boxed{\boxed{\rm{F \: = \: k \dfrac{Q_1' Q_2'}{d^2}}}}} \\ \\ \rightarrow {\sf{F \: = \: k \dfrac{6 \mu C \:  \times \: 0}{x^2}}} \\ \\ \rightarrow {\sf{F \: = \: 0}} \\ \\ {\underline{\sf{\therefore \: Force \: between \: balls \: is \: 0 \: N}}}

______________________

\large ♡ \: \:  {\underline{\underline{\mathfrak{Additional \: Information :}}}} \: \: ♡

Characteristics of Electric Charge :

  • It is a fundamental quantity.

  • Produces electrical or Magnetic Field.

  • It's S.I unit is Coulomb (C).

  • Formula is Q = I × t.

  • It is a scaler quantity.
Answered by nirman95
24

Answer:

Given:

2 balls having +3 μC and -3 μC attract each other with force F. Now +3 μC charge is added to both the balls.

To find:

New force of attraction

Concept:

Electrostatic force depends on 2 aspects :

  • Directly proportionally to product of charges.
  • Inversely proportional to square of distance of separation.

Calculation:

k is also called Coulomb's constant. The value of this constant is 1/4πε .

 \huge{ \red{F =  \frac{k(3)(3)}{ {r}^{2} } }}

 \huge{ \red{ =  > F =  \frac{9k}{ {r}^{2} } }}

Now , new charges will be :

q1 =  + 3 + 3 =  + 6 \mu c

q2 =  - 3 + 3 = 0 \:  \mu c

New force be F2 :

 \huge{ \red{F2 =  \frac{k(6)(0)}{ {r}^{2} } }}

 \huge{ \red{ =  > F2 =   0 }}

So the new force will be 0 N .

Final answer :

  \boxed{\huge{ \green{ \bold{F2 =   0 \: N   }}}}

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