Why are we not harmed when we put our hands across a car battery?
( ) we have low resistance
( ) the battery has low voltage
( ) the battery has high resistance
( ) the battery has low current

The cost of energy from a flashlight battery is closest to:
( ) 14 cents per kWh
( ) 5 cents per kWh
( ) 14 dollars per kWh
( ) 1000 dollars per kWh

A high-fidelity stereo speaker produces sound by:
( ) the force of a magnetic field on electric current
( ) the force of an electric field on an electric charge
( ) the force of a magnetic field on an electric charge

Current is measured by:
( ) volts
( ) calories
( ) amps
( ) watts
( ) ohms

When you increase the distance between two charges by a factor of 4, the
force between them:
( ) is two times less
( ) is four times less
( ) is sixteen times less
( ) is the same

Static electricity occurs when two surfaces rub against each other and:
( ) protons flow from one to another
( ) electrons flow from one to another
( ) positrons flow from one to another
( ) neutrons flow from one to another

Radio waves and x-rays have the:
( ) same frequency
( ) same speed
( ) same wave length
( ) same energy
( ) none of the above

The north geographic pole of the Earth
( ) is a south magnetic pole
( ) has always had the same polarity
( ) is exactly at the magnetic pole
( ) none of the above

Shannon is famous for having invented or discovered (among other things):
( ) GPS
( ) Global Hawk
( ) the sound channel
( ) the bit

To place a kilogram into space, using an optimum method, should take how
much gasoline fuel?
( ) about 1 gram
( ) about 1 kilogram
( ) about 25 kilograms
( ) about 100 kilograms

A rocket is a wasteful method for sending things to space. The energy it
takes, using a rocket, compared to using an elevator, is a factor of:
( ) 25
( ) 100
( ) 250
( ) 1000

A north magnetic pole is placed 1 cm from a south magnetic pole. The force
is:
( ) attractive
( ) repulsive
( ) zero
( ) attractive or repulsive, depending on the angle

2. The North Pole of the Earth is
( ) a north magnetic pole
( ) a south magnetic pole
( ) the Earth is not magnetized because the temperature is above the Curie point
( ) a north magnetic pole now, but it used to be a south magnetic pole

3. To make a north magnetic pole without a south magnetic pole,
( ) cut a permanent magnet in half
( ) create a magnetic field from a solenoid
( ) create a magnetic field from a straight wire
( ) give up  it cant be done, as far as we know.

Tesla argued that AC was superior to DC because
( ) it was less dangerous
( ) it had less flicker
( ) it could be used for electrocutions
( ) its voltage could be transformed

AC stands for
( ) Alternating Current
( ) Alternative Current
( ) Accelerated Current
( ) Awful Current

The Van de Graaff did not kill Prof. Muller because
( ) the voltage was not sufficiently high
( ) the high voltage did not last long enough
( ) it was DC rather than AC
( ) he doesnt mind if it hurts