A magnetic field is created by an electric charge if the charge is
a. positive
b. negative
c. moving
d. stationary
e. any of the above
C
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An unknown resistor is wired in series and an ammeter and a voltmeter are placed in parallel across both the resistor and the ammeter. This network is then placed across a battery
If one computes the value of the resistance by dividing the voltmeter reading by the ammeter reading, the value obtained A) is the true resistance. B) is greater than the true resistance. C) is less than the true resistance. D) could be anything. It depends on other factors.
Charge of a uniform density (8.0 nC/m2) is distributed over the entire xy plane. A charge of uniform density (3.0 nC/m2) is distributed over the parallel plane defined by z = 2.0 m. Determine the magnitude of the electric field for any point with z = 3.0 m.
A. 0.79 kN/C B. 0.17 kN/C C. 0.62 kN/C D. 0.34 kN/C E. 0.28 kN/C
An ideal gas is in contact with a heat reservoir to that it remains at a constant temperature of 300.0 K. The gas is compressed from 24.0 L to 14.0 L. The mechanical device that operating the piston to compress the gas expends 5.00 kJ of energy. How much heat flows between the gas and the heat reservoir?
A. -3.0 kJ B. -5.1 kJ C. -2.0 kJ D. -5.0 kJ
The number of grams of ice that can be melted by 1 g of 100°C steam is
A) 0.125 g. B) 0.148 g. C) 6.75 g. D) 8 g. E) none of the above