Which of the following results in a magnetic field? (select all that apply)
a.
a stationary electric charge
b.
a moving electric charge
c.
an unchanging electric charge
d.
a changing electric field

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is transformed ⇒ as it changes into other forms of energy.

Select the three ways that the parallel-plate capacitor differs from a car battery.

A10nc charge sits at a point in space where the magnitude of the electric field is 1500 n/c. what will the magnitude of the field be if the 10 nc charge is replaced by a 20 nc charge? assume the system is big enough to consider the charges as small test charges.