General Physics 2 - First Semester (1st Periodical)

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Questions and Answers

Which of the following best describes Gauss' law?

The force between two identical charges separated by a distance is equal to the product of the charges divided by the square of the distance.
The electric force between two charges is inversely proportional to the square of the distance between them.
The electric field directed perpendicular to the surface is the product of the electric field and the area of the surface.
The electric flux through any closed surface is proportional to the charge inside the surface. (correct)

What is the formula for electric flux?

$\Phi = EA$ (correct)
$\Phi = \frac{Q},{4\pi\epsilon_0 r^2}$
$\Phi = \frac{Q},{\epsilon_0}$
$\Phi = \frac{Q},{A}$

What is the formula for Coulomb's law?

$F = \frac{1},{4\pi\epsilon_0}\frac{q_1q_2},{r}$
$F = \frac{kq_1q_2},{r}$
$F = \frac{1},{4\pi\epsilon_0}\frac{q_1q_2},{r^2}$
$F = k\frac{q_1q_2},{r^2}$ (correct)

What is the formula for the electric field?

$E = \frac{F},{q}$ (D) Signup and view all the answers

What is the formula for the force between two charges?

$F = k\frac{q_1q_2},{r^2}$ (A) Signup and view all the answers

Which one of these correctly describes Gauss' law?

The electric flux through any closed surface is proportional to the charge inside the surface. (A) Signup and view all the answers

What is the electrical force of repulsion between two charges of -1.5 x 10⁵ C separated by a distance of 0.34 m?

0.51 N (D) Signup and view all the answers

What is the magnitude of the two charges if the force between them is 90 N and they are separated by 1 cm?

$1.5 \ imes 10^7$ C (D) Signup and view all the answers

What is the separation distance between two balloons with charges of 3.37 x 10⁴ C and -8.21 x 10² C if they attract each other with a force of 0.0626 N?

0.3 m (C) Signup and view all the answers

Which one of these is an important factor to consider when solving physics problems?

Analyzation and derivation of formula (B) Signup and view all the answers

Which one of these best describes the electric flux?

The product of the electric field and the area of the surface (A) Signup and view all the answers

What is the formula for the electrical force of repulsion between two charges?

$F = k\frac{q_1q_2}{r^2}$ (C) Signup and view all the answers

What is the formula for the magnitude of the two charges if the force between them is 90 N and they are separated by 1 cm?

$q = \sqrt{\frac{Fr^2}{k}}$ (D) Signup and view all the answers

What is the formula for the electric field?

$E = \frac{F}{q}$ (A) Signup and view all the answers

What is the separation distance between two balloons with charges of 3.37 x 10⁴ C and -8.21 x 10² C if they attract each other with a force of 0.0626 N?

$r = \sqrt{\frac{kq_1q_2}{F}}$ (A) Signup and view all the answers

Which one of these is true about a capacitor?

It stores electrical energy in an electric field (A) Signup and view all the answers

What is the unit of charge?

Coulomb (D) Signup and view all the answers

What is the unit of mass?

Kilogram (B) Signup and view all the answers

What is the unit of distance?

Meter (D) Signup and view all the answers

What is the unit of capacitance?

Farad (D) Signup and view all the answers

Which one of these correctly describes a capacitor?

A device that stores electrical energy in an electric field (D) Signup and view all the answers

What is the formula for electric potential?

$V = \frac{kQ}{r}$ (B) Signup and view all the answers

What is the formula for voltage?

$V = \frac{kQ}{r}$ (D) Signup and view all the answers

What is the formula for work done in moving a charge in an electric field?

$W = QV$ (C) Signup and view all the answers

What is the formula for final speed of a charge moving in an electric field?

$v_f = \sqrt{2QEd/m}$ (D) Signup and view all the answers

Which one of these correctly describes a capacitor?

A device that stores electrical energy in an electric field (D) Signup and view all the answers

What is the formula for Coulomb's law?

$F = k \frac{q_1 q_2}{r^2}$ (D) Signup and view all the answers

What is the formula for electric flux?

$\Phi = \int \vec{E} \cdot \vec{dA}$ (C) Signup and view all the answers

What is the formula for electric potential?

$V = \frac{kQ}{r}$ (A) Signup and view all the answers

What is the unit of capacitance?

Farad (D) Signup and view all the answers

Which one of these is the formula for calculating total resistance in a circuit?

$R_T = R_1 + R_2 + R_3 + R$ (C) Signup and view all the answers

Which one of these is the formula for calculating current in a circuit?

$I = \frac{V}{R}$ (D) Signup and view all the answers

Which one of these is the formula for calculating voltage in a circuit?

$V = I \times R$ (D) Signup and view all the answers

Which one of these is the formula for calculating the current flow on each resistor in a circuit?

$I_1 = \frac{V}{R_1}$, $I_2 = \frac{V}{R_2}$, $I_3 = \frac{V}{R_3}$ (D) Signup and view all the answers

Which one of these is the formula for calculating the total current in a circuit?

$I_T = I_1 + I_2 + I_3 + I$ (B) Signup and view all the answers

Which one of these correctly describes Ohm's law?

The relationship between current, voltage, and resistance. (B) Signup and view all the answers

What is the formula for calculating current in a circuit?

$I = \frac{V}{R}$ (C) Signup and view all the answers

What is the formula for calculating the total resistance in a circuit?

$R_T = R_1 + R_2 + R_3 + R$ (C) Signup and view all the answers

What is the formula for calculating the current flow on each resistor in a circuit?

$I_1 = \frac{V}{R_1}$, $I_2 = \frac{V}{R_2}$, $I_3 = \frac{V}{R_3}$ (A) Signup and view all the answers

What is the formula for calculating the total current in a circuit?

$I_T = I_1 + I_2 + I_3 + I$ (B) Signup and view all the answers

Which one of these is the formula for calculating the total resistance in a circuit?

$R_T = R_1 + R_2 + R_3 + R$ (A) Signup and view all the answers

Which one of these is the formula for calculating the current in a circuit?

$I = \rac{V},{R}$ (A) Signup and view all the answers

Which one of these is the formula for calculating the voltage in a circuit?

$V = I \ imes R$ (B) Signup and view all the answers

Which one of these is the formula for calculating the current flow on each resistor in a circuit?

$I_1 = \rac{V},{R_1}$, $I_2 = \rac{V},{R_2}$, $I_3 = \rac{V},{R_3}$ (D) Signup and view all the answers

Which one of these is the formula for calculating the total current in a circuit?

$I_T = I_1 + I_2 + I_3 + I$ (C) Signup and view all the answers

Flashcards

Gauss's Law

The electric flux through any closed surface is proportional to the enclosed charge.

Electric Flux

The measure of the electric field passing through a surface.

Electric Flux Formula

Φ = EA

Coulomb's Law

The force between two point charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.