Units of Measurement
What is the unit used to represent voltage?
A) Amperes (A)
B) Volts (V)
C) Ohms (Ω)
D) Volts (Ω)
B) Volts (V)
The energy needed to separate an electron from positive charges is called _________________.
A) Voltage
B) Current
C) Resistance
D) Ohms
A) Voltage
If the resistance of a circuit is 100Ω, and the current flowing through a circuit is 5A, then what is the voltage of that circuit?
A) .05 V
B) 20 V
C) 500 V
D) 10 V
C) 500 V
What is the unit used to measure Resistance?
A) Ohms (Ω)
B) Resistors (R)
C) Volts (R)
D) Resistors (Ω)
A) Ohms (Ω)
The amount of electrons that pass through a specific point in one second is called _____________.
A) Voltage
B) Current
C) Resistance
D) Ohms
B) Current
If the voltage of a circuit is 60V and the current is 12A, then what is the resistance of the circuit?
A) 0.2 Ω
B) 720Ω
C) 5Ω
D) 15Ω
C) 5Ω
What are the units used to measure current?
A) Volts (V)
B) Currents (C)
C) Amperes (A)
D) Ohms (Ω)
C) Amperes (A)
The opposition or obstacles that obstruct the flow of electrons through a conductor is called ______________.
A) Voltage
B) Resistance
C) Current
D) Ohms
B) Resistance
If the resistance of a circuit is 2Ω and the voltage of a circuit is 9V, then what is the current of the circuit?
A) 18A
B) 0.22A
C) 3A
D) 4.5A
D) 4.5A
What letter is used to represent Current in Ohm's Law?
A) V
B) C
C) I
D) A
C) I
A direct current is an electric current that flows in __________ direction(s).
A) the same
B) different
C) equal
D) unequal
A) the same
If the voltage of a circuit is doubled and the current remains the same, what will happen to the resistance?
A) The resistance will be reduced by half
B) The resistance will be doubled
C) The resistance will be tripled
D) the resistance will not change
B) The resistance will be doubled
What is the letter used to represent Resistance in Ohm's Law?
A) V
B) R
C) I
D) O
B) R
What is Ohm's Law?
A) I = UxR
B) R = I/U
C) U = R/I
D) U = RxI
D) U = RxI
If the resistance of a circuit doubles and the voltage remains the same, what will happen to the current of that circuit?
A) The current will triple
B) The current will double
C) The current will be reduced by half
D) The current will be reduced by one quarter
C) It will be reduced by half