Monday, November 22, 2010

TutorState.com - Electricity Quiz

TutorState.com - Electricity Quiz

1

What is the equivalent capacitance (in µF) between points A and B as shown if x is 2.91 µF, y is 2.02 µF, and z is 3.96 µF?

 


2
How much charge (in µC) can be stored by a parallel-plate capacitor with a plate area of 0.00131 square meters having air (8.85 X 10^-12 C^2/(Nm^2) between the plates where the magnitude of the electric field is 3.18 MN/C? 

3
A wire with a resistance of 3.19 ohm connected across a 111 V source carries current for 23.7 minutes. How much charge (in C) passes through the wire?

4
An appliance draws 7.1 amps of current when connected to 120 V. What is the cost (in $) of operating it for 15.8 hours at $ 0.137 per kWh?

5
An appliance delivers 496 J of energy when its capacitors discharge. If the device has a capacitance of 4.18 mF, how much charge (in C) is delivered?

6
A resistance thermometer has a resistaqnce of 40 ohm at a temperature of 16.2 ºC. At what temperature (in ºC) will it have a resistance of 46.4 ohm (linear coefficient of expansion = .00392 /ºC). 


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