Sunday, July 15, 2012

physics


Answers will appear on next post 

An electric dryer consumes 6.0 x 106 joules of energy when operating at 220 volts for 30 minutes. During operation the dryer draws a current of approximately? 

A. 10 A
B. 15 A
C. 20 A
D. 25 A

 When 8.0 electronvolt photons strike a photo emissive surface, the maximum kinetic energy of ejected photoelectrons is 6.0 electronvolts. The work function of the photo emissive surface is 

A. .01 eV
B. 1.0 eV
C. 2.0 eV
D. 3.0 eV

A high resistance is connected in series with the internal coil of a galvanometer to make? 

A. An ammeter
B. A motor
C. A generator
D. A voltmeter

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