Question

QUESTION 1

A toy electric car with a total capacitance of 4.0 Farads is charged until the voltage reaches 4.0 volts. How much energy is stored in the toy car?

A		128 J
B		8 J
C		75 J
D		4 J
E		37.5 J
F		32 J

QUESTION 2

A toy electric car with a total capacitance of 4.0 Farads is charged until the voltage reaches 4.0 volts. When released, this car travels 200 feet. Calculate the Performance Rating of the car.

A		200 feet/J
B		1.56 feet/J
C		0.16 feet/J
D		6.25 feet/J
E		300 J
F		8 feet/J

QUESTION 3

A toy electric car with a total capacitance of 4.0 Farads that is charged until the voltage reaches 4.0 volts, travels 200 feet. Calculate the Performance Rating in miles per kWh (mpk).

A		5460 mpk
B		21,500 mpk
C		18.2 mpk
D		4263 mpk
E		1750 mpk
F		1066 mpk

QUESTION 4

Our toy electric car has two circuits. One circuit charges the car using a ___________, while the other circuit powers the car using a ________________. (Answers are read left to right.)

A		Photovoltaic cell, capacitor
B		Photovoltaic cell, battery
C		Capacitor, photovoltaic cell
D		Capacitor, battery
E		Battery, motor
F		Motor, knife switch

QUESTION 5

A Nissan LEAF has Performance Rating of 3-5 mpk. The most basic reason why our toy car has a far higher rating is:

A		it has much better batteries
B		it weighs much less
C		it was charged to a higher voltage
D		it lacks air bags
E		its wheels are made of hard plastic
F		it has better capacitors

Answer 1

option F