Each Branch in a Four-Branch Parallel Circuit Carries 10 MA

question 14

Multiple Choice

Each branch in a four-branch parallel circuit carries 10 mA. If one of the branches opens, then the current in each of the other three branches equals ________.

• A)0 A
• B)30 mA
• C)13.33 mA
• D)10 mA

---

Definitions:

Cardiac Muscle Cells

Specialized muscle cells in the heart responsible for generating the force to pump blood throughout the body.

Hyperpolarization Period

A phase following the action potential in neurons where the inside of the cell becomes more negatively charged than the resting potential.

AV Period

The atrioventricular (AV) period refers to the phase of the cardiac cycle when the atria are contracting and pushing blood into the ventricles.

Ectopic Focus

Any pacemaker other than the sinus node of the heart; abnormal pacemaker; an ectopic pacemaker.