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Harris Chapter 14 Review 1
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Which statement is NOT true about a galvanic cell?
 
The cathode is negative with respect to the anode.
 
It uses a spontaneous reaction to produce electricity.
 
Oxidation occurs at the anode and reduction at the cathode.
 
The voltage of the cell is the difference between the potent
True or False: Current (I) is directly proportional to the resistance (R) of the circuit.
 
False
 
True
The resistance of a 50 watt bulb is ___ that of a 100 watt bulb if both run on the same voltage
 
1/2
 
1/4
 
The same as
 
Twice
The amount of work done in moving a charge of 2C across two points having a potential difference of 24 V is
 
48 J
 
50J
 
24 J
 
%4 J
What are the SI units for electric current?
 
C/s
 
e/s
 
-e/s
 
C/S^2
What is the oxidation number of nitrogen in the HNO3?
 
5
 
-1
 
+1
 
6
In a circuit, a 33 ohm resistor carries a current of 2 Amp. The voltage across the resistor is
 
66 Volts
 
33 Volts
 
132 Volts
 
16.5 Volts
Electric pressure is called
 
Voltage
 
Power
 
Energy
 
Resistance
The S.I unit of power is
 
Watt
 
Watt-Hour
 
Coulomb
 
Joule
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