Listrik Statis Dinamis

Open Ended

NIM / ID

Multiple Choice

What is the formula for calculating the resultant electric force (Fr) when multiple electric forces are acting on a charge?

• Fr = √(F12² + F13² + 2F12F13cosØ)

• Fr = F12 + F13 + F1-2 + F1-3

• Fr = F12 - F13 + 2F12F13cosØ

• Fr = F12 + F13 - 2F12F13cosØ

Multiple Choice

Which of the following best describes electric field lines?

• They originate from positive charges and end on negative charges

• They indicate the path that a positive test charge would follow

• Both A and B

• Neither A nor B

Multiple Choice

What does it mean when the electric field lines are close together?

• the field is positive
• the field is negative
• The field is strong
• the field is weak

Multiple Choice

Dua buah muatan masing-masing q1 = 6 μC dan q2 = 12 μC terpisah sejauh 30 cm. Tentukan besar gaya yang terjadi antara dua buah muatan tersebut, gunakan tetapan k = 9 x 10^9 dalam satuan standar!

Two point charges, 𝑞1 = 6 𝜇𝐶 and 𝑞2 = 12 𝜇𝐶 , are separated by a distance of 30 cm. Determine the magnitude of the electric force between the two charges. Use 𝑘 = 9 × 10^9 in standard units.

• 720 N

• 360 N

• 1440 N

• 180 N

Multiple Choice

Determine the magnitude of the resultant Coulomb force acting on charge q1.

• 1.5 N

• 2.5 N

• 3.5 N

• 4.5 N

Open Ended

Three point charges form an equilateral triangle as shown. The distance between each charge is 10 cm. Given: 𝑄1 = +1 C 𝑄2 = 𝑄3 = −2 C Coulomb constant: 𝑘 = 9 × 10^9

Determine the magnitude of the resultant Coulomb force acting on charge 𝑄1.

Multiple Choice

What is the electric potential at point P due to the charges Q1, Q2, and Q3?

Coulomb constant: 𝑘 = 9 × 109 N ⋅ m2/C2

𝑄1 = +1 × 10−12 C

𝑄2 = +2 × 10−12 C

𝑄3 = −1 × 10−12 C

• 5.0 x 10^-1 V

• 6.0 x 10^-1 V

• 7.0 x 10^-1 V

• 4.0 x 10^-1 V

Open Ended

Seutas kawat memiliki hambatan 40 ohm. Jika kawat tersebut ditarik sehingga

panjangnya menjadi 1,5 kali panjang semula, berapa hambatan kawat itu

sekarang?

A wire has resistance 40 Ω. If it is stretched until its length becomes 1.5 times

the original, what is its new resistance?

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Poll

How confident do you feel about this topic now?

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• Somewhat confident
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