PHY113-2 (CO3)

Electric field - while magnetic field -.

• winds around the source; is central

• is central; winds around the source

• They are both central.

• They both wind around the source.

The electrostatic force between two charges separated by a finite distance was measured. When the distance among these two charges is doubled, the force between the charges

• quadruples

• doubles

• is halved

• is quartered

• Parallel to the current.

• Opposite the current.

• Radially outward.

• Radially inward.

• None of the above.

• Parallel to the current.

• Opposite the current.

• Radially outward.

• Radially inward.

• None of the above.

Which of the following diagnostic tools is the odd man out?

• X-ray

• Electrocardiogram (ECG)

• Magnetic resonance imaging (MRI)

• Ultrasound

A magnetic resonance imaging (MRI) machine is a finite solenoid. When your body is inserted into it, it is able to image soft tissues because the magnetic dipole moment of the cells the - magnetic field

• align parallel to

• align opposite to

• align perpendicular to

• do not align with

Three capacitors are connected as shown in the figure. What is the equivalent capacitance between points a and b?

Thirteen resistors are connected across points A and B as shown in the figure. If all the resistors are accurate to 2 significant figures, what is the equivalent resistance between points A and B?

Consider the Hodgkin-Huxley model of nerve signal transport.

Since the cell membrane filters what gets in and out of the cell, it resembles the function of a/an

• capacitor

• DC current source

• DC voltage source

• resistor

Consider the Hodgkin-Huxley model of nerve signal transport.

lon-gated channels are voltage gates that either allow or prevent the entry or exit of ions. Therefore, they resemble a DC voltage source connected to a

• capacitor

• DC current source

• DC voltage source

• variable resistor