Question

b. Calculate the electric potential energy stored in a capacitor that stores 3.40 × 10–10 C of charge at 20.0 V.

Answer 1

electric potential energy in a capacitor is (1/2)QV where Q is the charge, V is voltage. you're given Q and V so you can calculate (1/2)QV from that.

Answer 2

so (1/2)(3.40 × 10–10)( 20.0) ?

Answer 3

yes

Answer 4

I dont have a calculator so when I calculate it I get 3.4e-9

Answer 5

yeah that's what i got too

Answer 6

3.4×10−9 I got this

Answer 7

i have 20 more minutes can you help me finish

Answer 8

c. Calculate the capacitance of a system that stores 4.0 × 10–10 C of charge at 25.0 V. (3 points)

d. What is the power of a lightbulb that has a current of 0.480 A at 120.0 V? (3 points)

e. What is the voltage drop across a 40.0 Ω resistor that has a 0.350 A current? (3 points)

f. In the space below, draw and label a circuit diagram that has a 24.0 V power supply and two 10.0 Ω resistors connected in parallel. (3 points)

g. What is the equivalent resistance of a 3.0 Ω resistor and a 6.0 Ω resistor connected in parallel? (3 points)

h. What is the magnetic force on a particle that has 0.000500 C of charge and is moving at 2.50 × 105 m/s to the right through a magnetic field that is 4.20 T and pointing away from you? Specify both magnitude and direction in your answer. (5 points)