Question 1

Doubling the area and plate separation of a capacitor

Accepted Answer

A)  Increases capacitance by a factor of 4 
B)  Decreases capacitance by a factor of 4 
C)  Increases capacitance by a factor of 2 
D)  Decreases capacitance by a factor of 2 
E)  Leaves capacitance unchanged. 
A)  Increases capacitance by a factor of 4 
B)  Decreases capacitance by a factor of 4 
C)  Increases capacitance by a factor of 2 
D)  Decreases capacitance by a factor of 2 
E)  Leaves capacitance unchanged. E

Question 2

Doubling the plate separation of a cap acitor

Accepted Answer

A)  Doubles the capacitance 
B)  Halves the capacitance 
C)  Doesn't do anything to the capacitance. 
D)  Increases the capacitance by a factor or 4 
E)  Decreases the capacitance by a factor of 4 
A)  Doubles the capacitance 
B)  Halves the capacitance 
C)  Doesn't do anything to the capacitance. 
D)  Increases the capacitance by a factor or 4 
E)  Decreases the capacitance by a factor of 4 B

Question 3

The electrical potential around a negative charge is

Accepted Answer

A)  Negative and proportional to the charge 
B)  Negative and proportional to the square of the charge 
C)  Positive and proportional to the charge 
D)  Positive and proportional to the square of the charge 
E)  Negative and proportional to the inverse square of the distance. 
A)  Negative and proportional to the charge 
B)  Negative and proportional to the square of the charge 
C)  Positive and proportional to the charge 
D)  Positive and proportional to the square of the charge 
E)  Negative and proportional to the inverse square of the distance. A

Question 4

A conservative force

Accepted Answer

A)  has no potential associated with it 
B)  Does positive work on an object around any closed loop 
C)  Has potential differences that depend only on the final and initial state 
D)  Repels 
E)  Attracts 
A)  has no potential associated with it 
B)  Does positive work on an object around any closed loop 
C)  Has potential differences that depend only on the final and initial state 
D)  Repels 
E)  Attracts

Question 5

The electric force on an ion in solution is

Accepted Answer

A)  qE (q is the charge and E is the electric field intensity) 
B)  dV/dx (V is the voltage) 
C)  -dV/dx (V is the voltage) 
D)  $ \beta $v (v is the velocity, $ is the drag coefficient) 
E)  vC (v is the velocity, C is the concentration) 
A)  qE (q is the charge and E is the electric field intensity) 
B)  dV/dx (V is the voltage) 
C)  -dV/dx (V is the voltage) 
D)  $ \beta $v (v is the velocity, $ is the drag coefficient) 
E)  vC (v is the velocity, C is the concentration)

Question 6

Increasing the thickness of a mem brane, such as adding layers in myelinated nerves

Accepted Answer

A)  Increases the capacitance and Increases the charge required per unit potential 
B)  Decreases the capacitance and Increases the charge required per unit potential 
C)  Increases the capacitance and decreases the charge required per unit potential 
D)  Decreases the capacitance and decreases the charge required per unit potential 
E)  Decreases the capacitance but has no effect on the charge required because it Increases the area 
A)  Increases the capacitance and Increases the charge required per unit potential 
B)  Decreases the capacitance and Increases the charge required per unit potential 
C)  Increases the capacitance and decreases the charge required per unit potential 
D)  Decreases the capacitance and decreases the charge required per unit potential 
E)  Decreases the capacitance but has no effect on the charge required because it Increases the area

Question 7

Which is NOT a characteristic of a conservative force

Accepted Answer

A)  The work done by the force around any closed loop is zero. 
B)  The force is the charge times the negative gradient of the potential 
C)  The potential is path-independent 
D)  The potential difference between any two points depends on the points but not the path 
E)  The force is the negative product of the charge (mass, charge) and the field intensity. 
A)  The work done by the force around any closed loop is zero. 
B)  The force is the charge times the negative gradient of the potential 
C)  The potential is path-independent 
D)  The potential difference between any two points depends on the points but not the path 
E)  The force is the negative product of the charge (mass, charge) and the field intensity.

Question 8

The electrical potential

Accepted Answer

A)  Does negative work on an object around any closed loop 
B)  Does positive work on an object around any closed loop 
C)  Dep ends only on the final state 
D)  Is a non-conservative force 
E)  Is the ratio of coulombs to joules 
A)  Does negative work on an object around any closed loop 
B)  Does positive work on an object around any closed loop 
C)  Dep ends only on the final state 
D)  Is a non-conservative force 
E)  Is the ratio of coulombs to joules

Question 9

Increasing the plate separation decreases the capacitance because

Accepted Answer

A)  It takes more energy to separate charge by a greater distance 
B)  More charge can fit on the plate 
C)  Less charge can fit on the plate 
D)  It takes less energy to separate charge by a greater distance 
E)  The electric field won't be homogenous 
A)  It takes more energy to separate charge by a greater distance 
B)  More charge can fit on the plate 
C)  Less charge can fit on the plate 
D)  It takes less energy to separate charge by a greater distance 
E)  The electric field won't be homogenous

Exam 1: Physical Foundations Ii: Electrical Force Potential Capacitance and Current

Doubling the area and plate separation of a capacitor

Doubling the plate separation of a cap acitor

The electrical potential around a negative charge is

A conservative force

The electric force on an ion in solution is

Increasing the thickness of a mem brane, such as adding layers in myelinated nerves

Which is NOT a characteristic of a conservative force

The electrical potential

Increasing the plate separation decreases the capacitance because

Chemical Foundations I: Chemical Energy and Intermolecular Forces

Chemical Foundations Ii: Concentration and Kinetics

Diffusion

Electrochemical Potential and Free Energy

Cell Structure

Dna and Protein Synthesis

Protein Structure

Biological Membranes

Passive Transport and Facilitated Diffusion

Active Transport: Pumps and Exchangers

Osmosis and Osmotic Pressure

Cell Signaling

ATP Production I: Glycolysis

Atp Production Ii: Tca Cycle and Oxidative Phosphorylation

Atp Production Iii: Fatty Acid Oxidation and Amino Acid Oxidation

Origin of the Membrane Potential

The Action Potential

Propagation of the Action Potential

Skeletal Muscle Mechanics

Contractile Mechanisms in Skeletal Muscle

Neuromuscular Junction and Ec Coupling

Muscle Energetics Fatigue and Training

Smooth Muscle

Organization of the Nervous System

Cells Synapses and Neurotransmitters

Cutaneous Sensory Systems

Spinal Reflexes

Balance and Control of Movement

the Chemical Senses

Hearing

Vision

Autonomic Nervous System

Overview of the Cv System and Blood

Plasma and Red Blood Cells

White Blood Cells and Inflammation

The Heart As a Pump

Cellular Basis of Cardiac Contractility

the Cardiac Function Curve

Vascular Function: Hemodynamics

Microcirculation and Solute Exchange

Regulation of Perfusion

Integration of Cardiac Output and Venous Return

Regulation of Arterial Pressure

Mechanics of Breathing

Lung Volumes and Airway Resistance

Gas Exchange in the Lung

Oxygen and Carbon Dioxide Transport

Acid Base Physiology I Bicarbonate Buffers and Respiratory Compensation

Control of Ventilation

Anatomy and Renal Overview

Glomerular Filtration

Tubular Reabsorption and Secretion

Concentration and Dilution of Urine

Mouth and Esophagus

The Stomach

Intestinal and Colonic Motility

Pancreatic and Biliary Secretion

Digestion and Absorption of the Macronutrients

Energy Balance and Regulation of Food Intake

General Principles of Endocrinology

Hypothalamus and Pituitary Gland

The Thyroid Gland

The Endocrine Pancreas

The Adrenal Cortex

The Adrenal Medulla

The Calcitropic Hormones

Calcium and Phosphorus Homeostasis Ii

Female Reproductive Physiology

Filters