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. The product of volts times amperes equals A. Resistance B. Joules/coulomb

/in /by

1. The product of volts times amperes equals A. Resistance B. Joules/coulomb
C. Watts

D. Amperes/joule

2. Increasing the voltage across a wire by a factor of three will change the resistance in the wire by a factor of

A. 1/9

B. 1/3

C. 1

D. 3

3. Which change in a circuit would reduce the current flow?

A. Increase resistance

B. Increase voltage

C. Decrease resistance

4. Increasing the current in a resistor by a factor of 2 causes the thermal energy produced by the resistor to change by a factor of

A. 1/4

B. 1/2

C. 2

D. 4

5. Increasing the resistance of a wire by a factor of 2 causes the thermal energy produced in the resistor to change by a factor of

A. 1/4

B. 1/2

C. 2

D. 4

6. In order to keep power losses due to thermal energy production to a minimum when transmitting electricity over long distances, the ____ is kept ery high while the current is kept very low.

A. voltage

B. resistance

C. temperature

 
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