A patient with myasthenia gravis (MG) is admitted to the hos…

A patient with myasthenia gravis (MG) is admitted to the hospital with severe weakness and acute respiratory insufficiency. The health care provider performs a Tensilon test to help determine the cause of the symptoms. During the test, the patient’s eyes open easily and he is able to sit up and speak clear sentences. The nurse determines that the patient is in? 

This description applies to all questions 2.1-2.3. Two long…

This description applies to all questions 2.1-2.3. Two long coaxial solenoids each carry current I, but in opposite directions as shown in the figure below. The inner solenoid (radius a) has n­2 turns per unit length, and the outer one (radius b) has n1. The field B inside the inner coil is given by: