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19 questions
Calculate current if a charge of 10 Coulombs flows past a point in 5 seconds
2 Amps
50 Amps
0.5 Amps
What is the energy given off by a 20V bulb which has 10C passing through it?
200J
2J
0.5J
250J
Ohm's Law states that...
...the electricity is a series circuit will always be constant
...current is directly proportional to potential difference when temperature is constant
...current is directly proportional to power in a wire at constant potential difference
...voltage and current increase except in a thermistor
The graph shows the change in current with potential difference for
an LED
a filament lamp
a diode
a thermistor
Which component has the highest resistance?
1
2
Where would you place a voltmeter in the circuit?
Green ?
Red ?
the formula to find current when the values of V and R are known is
I = V^{2}R
I = V/R
I = R/V
I=VR
____________ __________ assumes that current flows out of the positive side of the battery, through the circuit, and back to the negative side of the battery.
Conventional Current
Ohms Law
Electron Flow
Kirchoff's Current Law
In a series circuit, there are multiple paths for current to flow.
True
False
The total resistance (RT) is equal to the sum of all of the resistances (i.e., R1 + R2 + R3) in a series circuit.
True
False
The sum of all of the voltage drops (VR1 + VR2 + VR2) is equal to the total applied voltage (VT) in a series circuit.
True
False
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