Question 1

Kirchhoff's junction rule is a statement of

Accepted Answer

A) the law of conservation of momentum. 
B) the law of conservation of charge. 
C) the law of conservation of energy. 
D) the law of conservation of angular momentum. 
E) Newton's second law. 
A) the law of conservation of momentum. 
B) the law of conservation of charge. 
C) the law of conservation of energy. 
D) the law of conservation of angular momentum. 
E) Newton's second law.

Question 2

Three capacitors are arranged as shown in the figure,with a voltage source connected across the combination.C1 has a capacitance of  
  Has a capacitance of   And   Has a capacitance of  
Find the potential drop across the entire arrangement if the potential drop across C2 is

Accepted Answer

A) 1,500 V 
B) 1,000 V 
C) 470 V 
D) 430 V 
A) 1,500 V 
B) 1,000 V 
C) 470 V 
D) 430 V

Question 3

You obtain a 100-W light bulb and a 50-W light bulb.Instead of connecting them in the normal way,you devise a circuit that places them in series across normal household voltage.If each one is an incandescent bulb of fixed resistance,which statement about these bulbs is correct?

Accepted Answer

A) Both bulbs glow with the same brightness,but less than their normal brightness. 
B) Both bulbs glow with the same brightness,but more than their normal brightness. 
C) The 100-W bulb glows brighter than the 50-W bulb. 
D) The 50-W bulb glows more brightly than the 100-W bulb. 
A) Both bulbs glow with the same brightness,but less than their normal brightness. 
B) Both bulbs glow with the same brightness,but more than their normal brightness. 
C) The 100-W bulb glows brighter than the 50-W bulb. 
D) The 50-W bulb glows more brightly than the 100-W bulb.

Question 4

If a quantity you calculated has units of A ∙ s,what is that quantity?

Accepted Answer

A) potential 
B) resistivity 
C) resistance 
D) capacitance 
E) charge 
A) potential 
B) resistivity 
C) resistance 
D) capacitance 
E) charge

Question 5

You are given a copper bar of dimensions 3 cm × 5 cm × 8 cm and asked to attach leads to it in order to make a resistor.If you want to achieve the smallest possible resistance,you should attach the leads to the opposite faces that measure

Accepted Answer

A) 3 cm × 5 cm. 
B) 3 cm × 8 cm. 
C) 5 cm × 8 cm. 
D) Any pair of faces produces the same resistance. 
A) 3 cm × 5 cm. 
B) 3 cm × 8 cm. 
C) 5 cm × 8 cm. 
D) Any pair of faces produces the same resistance.

Question 6

Identical ideal batteries are connected in different arrangements to the same light bulb,as shown in the figure.For which arrangement will the bulb shine the brightest?

Accepted Answer

A) A 
B) B 
C) C 
A) A 
B) B 
C) C

Question 7

A 200-W light bulb is connected across a 110-V dc power supply.What current will flow through this bulb?

Accepted Answer

A) 0.90 A 
B) 0.36 A 
C) 0 A 
D) 0.60 A 
E) 1.8 A 
A) 0.90 A 
B) 0.36 A 
C) 0 A 
D) 0.60 A 
E) 1.8 A

Question 8

If a quantity you calculated has units of  
What is that quantity?

Accepted Answer

A) potential 
B) resistivity 
C) resistance 
D) capacitance 
E) current 
A) potential 
B) resistivity 
C) resistance 
D) capacitance 
E) current

Kirchhoff's junction rule is a statement of

Three capacitors are arranged as shown in the figure,with a voltage source connected across the combination.C₁ has a capacitance of Has a capacitance of And Has a capacitance of Find the potential drop across the entire arrangement if the potential drop across C₂ is

You obtain a 100-W light bulb and a 50-W light bulb.Instead of connecting them in the normal way,you devise a circuit that places them in series across normal household voltage.If each one is an incandescent bulb of fixed resistance,which statement about these bulbs is correct?

If a quantity you calculated has units of A ∙ s,what is that quantity?

You are given a copper bar of dimensions 3 cm × 5 cm × 8 cm and asked to attach leads to it in order to make a resistor.If you want to achieve the smallest possible resistance,you should attach the leads to the opposite faces that measure

Identical ideal batteries are connected in different arrangements to the same light bulb,as shown in the figure.For which arrangement will the bulb shine the brightest?

A 200-W light bulb is connected across a 110-V dc power supply.What current will flow through this bulb?

If a quantity you calculated has units of What is that quantity?

Introduction to Physics

One-Dimensional Kinematics

Vectors in Physics

Two-Dimensional Kinematics

Newtons Laws of Motion

Applications of Newtons Laws

Work and Kinetic Energy

Potential Energy and Conservation of Energy

Linear Momentum and Collisions

Rotational Kinematics and Energy

Rotational Dynamics and Static Equilibrium

Gravity

Oscillations About Equilibrium

Waves and Sound

Fluids

Temperature and Heat

Phases and Phase Changes

The Laws of Thermodynamics

Electric Charges, Forces, and Fields

Electric Potential and Electric

Magnetism

Magnetic Flux and Faradays Law of Induction

Alternating-Current Circuits

Electromagnetic Waves

Geometrical Optics

Optical Instruments

Physical Optics: Interference and Diffraction

Relativity

Quantum Physics

Atomic Physics

Nuclear Physics and Nuclear Radiation

Filters

Exam 21: Electric Current and Direct-Current Circuits

Kirchhoff's junction rule is a statement of

Three capacitors are arranged as shown in the figure,with a voltage source connected across the combination.C1 has a capacitance of Has a capacitance of And Has a capacitance of Find the potential drop across the entire arrangement if the potential drop across C2 is

You obtain a 100-W light bulb and a 50-W light bulb.Instead of connecting them in the normal way,you devise a circuit that places them in series across normal household voltage.If each one is an incandescent bulb of fixed resistance,which statement about these bulbs is correct?

If a quantity you calculated has units of A ∙ s,what is that quantity?

You are given a copper bar of dimensions 3 cm × 5 cm × 8 cm and asked to attach leads to it in order to make a resistor.If you want to achieve the smallest possible resistance,you should attach the leads to the opposite faces that measure

Identical ideal batteries are connected in different arrangements to the same light bulb,as shown in the figure.For which arrangement will the bulb shine the brightest?

A 200-W light bulb is connected across a 110-V dc power supply.What current will flow through this bulb?

If a quantity you calculated has units of What is that quantity?

Introduction to Physics

One-Dimensional Kinematics

Vectors in Physics

Two-Dimensional Kinematics

Newtons Laws of Motion

Applications of Newtons Laws

Work and Kinetic Energy

Potential Energy and Conservation of Energy

Linear Momentum and Collisions

Rotational Kinematics and Energy

Rotational Dynamics and Static Equilibrium

Gravity

Oscillations About Equilibrium

Waves and Sound

Fluids

Temperature and Heat

Phases and Phase Changes

The Laws of Thermodynamics

Electric Charges, Forces, and Fields

Electric Potential and Electric

Magnetism

Magnetic Flux and Faradays Law of Induction

Alternating-Current Circuits

Electromagnetic Waves

Geometrical Optics

Optical Instruments

Physical Optics: Interference and Diffraction

Relativity

Quantum Physics

Atomic Physics

Nuclear Physics and Nuclear Radiation

Filters

Three capacitors are arranged as shown in the figure,with a voltage source connected across the combination.C₁ has a capacitance of Has a capacitance of And Has a capacitance of Find the potential drop across the entire arrangement if the potential drop across C₂ is