CCDS IBHRE EXAM NEWEST 2026 PACKAGE DEAL| 2
DIFFERENT VERSIONS WITH COMPLETE 900 REAL
EXAM AND PRACTICE QUESTIONS WITH CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS) ALREADY
GRADED A | IBHRE CCDS EXAM PREP 2025 (BRAND
NEW!!)
Question 1
What is the definition of rheobase?
A) The pulse width at twice the chronaxie value
B) The lowest point on a strength-duration curve at an infinitely
long pulse duration
C) The minimum voltage required to capture the heart at any
pulse width
D) The time constant of a capacitor discharge curve
1
,Correct Answer: B
Rationale: Rheobase is defined as the lowest point on a
strength-duration curve at an infinitely long pulse duration. It
represents the minimum current or voltage that will consistently
produce cardiac capture when the pulse duration is very long .
Question 2
What is chronaxie time?
A) The minimum pulse width required for capture at infinite
voltage
B) The pulse width at twice the rheobase value
C) The time required for a capacitor to discharge completely
D) The refractory period of the atrioventricular node
Correct Answer: B
Rationale: Chronaxie is the pulse width at twice the rheobase
2
,value. It approximates the most efficient stimulation pulse
duration and is a measure of tissue excitability .
Question 3
Which formula correctly represents Ohm's Law?
A) Current = Voltage × Resistance
B) Voltage = Current × Resistance
C) Resistance = Voltage × Current
D) Power = Voltage × Current²
Correct Answer: B
Rationale: Ohm's Law states that Voltage (electromotive force)
equals Current (flow of electrons) multiplied by Resistance
(opposition to current flow). The formula is V = I × R .
Question 4
What is the formula for electrical charge?
3
, A) Charge = Voltage × Resistance
B) Charge = Current × Time
C) Charge = Power × Time
D) Charge = Energy × Voltage
Correct Answer: B
Rationale: Electrical charge is calculated by multiplying current
(I) by time (T). The formula is Charge = I × T, measured in
coulombs .
Question 5
According to Furman's formula, how is energy calculated?
A) Energy = Voltage × Resistance
B) Energy = Current × Voltage × Pulse Width
C) Energy = Current² × Resistance × Time
D) Energy = Voltage² × Pulse Width / Resistance
4
DIFFERENT VERSIONS WITH COMPLETE 900 REAL
EXAM AND PRACTICE QUESTIONS WITH CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS) ALREADY
GRADED A | IBHRE CCDS EXAM PREP 2025 (BRAND
NEW!!)
Question 1
What is the definition of rheobase?
A) The pulse width at twice the chronaxie value
B) The lowest point on a strength-duration curve at an infinitely
long pulse duration
C) The minimum voltage required to capture the heart at any
pulse width
D) The time constant of a capacitor discharge curve
1
,Correct Answer: B
Rationale: Rheobase is defined as the lowest point on a
strength-duration curve at an infinitely long pulse duration. It
represents the minimum current or voltage that will consistently
produce cardiac capture when the pulse duration is very long .
Question 2
What is chronaxie time?
A) The minimum pulse width required for capture at infinite
voltage
B) The pulse width at twice the rheobase value
C) The time required for a capacitor to discharge completely
D) The refractory period of the atrioventricular node
Correct Answer: B
Rationale: Chronaxie is the pulse width at twice the rheobase
2
,value. It approximates the most efficient stimulation pulse
duration and is a measure of tissue excitability .
Question 3
Which formula correctly represents Ohm's Law?
A) Current = Voltage × Resistance
B) Voltage = Current × Resistance
C) Resistance = Voltage × Current
D) Power = Voltage × Current²
Correct Answer: B
Rationale: Ohm's Law states that Voltage (electromotive force)
equals Current (flow of electrons) multiplied by Resistance
(opposition to current flow). The formula is V = I × R .
Question 4
What is the formula for electrical charge?
3
, A) Charge = Voltage × Resistance
B) Charge = Current × Time
C) Charge = Power × Time
D) Charge = Energy × Voltage
Correct Answer: B
Rationale: Electrical charge is calculated by multiplying current
(I) by time (T). The formula is Charge = I × T, measured in
coulombs .
Question 5
According to Furman's formula, how is energy calculated?
A) Energy = Voltage × Resistance
B) Energy = Current × Voltage × Pulse Width
C) Energy = Current² × Resistance × Time
D) Energy = Voltage² × Pulse Width / Resistance
4
