Consider the diagram of a 2-cell, 3-bulb circuit at the right. Several positions on the circuit are labeled with a letter. At which two positions is the electric pressure (potential) the same value?

In a system, when potential energy decreases, then entropy also decreases. true false

Which of the following changes will result in a stronger electromagnet? a. using fewer coils of wire b. using a higher voltage c. using a shorter nail d. using a longer wire

3. a particle with initial velocity v⃗ 0=(5.85×103m/s)j^ enters a region of uniform electric and magnetic fields. the magnetic field in the region is b⃗ =−(1.35t)k^. you can ignore the weight of the particle. a. calculate the magnitude of the electric field in the region if the particle is to pass through undeflected, for a particle of charge +0.640 nc.