Intro. to Electrical Current S.M.H.S.
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1. If the temperature of a conductor is increased, the amount of current at 10 V would be
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5 points
the same
less
greater
depends on whether the Yankees win the World Series
2. If 2.0 C of charge pass a point in a circuit in 4.0 s, the current is equal to
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5 points
0.50 A
1.0 A
2.0 A
8.0 A
3. Which condition must exist between two points in a conductor in order to maintain a flow of charge ?
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5 points
a potential difference
a magnetic field
a high resistance
a low resistance
4. The ratio of the potential difference across a conductor to the current in the conductor is called
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5 points
electric potential
current
conductance
resistance
5. If the length of a copper wire is reduced by half, then the resistance of the wire will be
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5 points
halved
doubled
quartered
quadrupled
6. A flow rate of 1 C per 0.1 s is measured in a wire. What is the electrical current in the wire ?
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0 points
1 A
0.1 A
10 A
100 A
7. A 10 V potential difference maintains a 2 A current in a resistor. What is the value of the resistor ?
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5 points
0.2 ohms
5 ohms
20 ohms
100 ohms
8. The current in a resistor connected to a 12 V source is 3.0 A. How many coulombs of charge will pass through the resistor in 2.0 s ?
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5 points
36 C
6.0 C
3.0 C
4.0 C
9. Two 300 ohm resistors are connected in series with a 60 V battery. What is the current in the circuit ?
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5 points
0.1 A
1 A
10 A
0.2 A
10. A 5 ohm resistor and 10 ohm resistor are connected in series. Compared to the potential drop across the 5 ohm resistor, the potential drop across the 10 ohm resistor is?
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5 points
smaller
greater
the same
equal to the number of games that the Mets lose to the Yankees
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