Unit 2 Quiz
An electrical circuit has a voltage of 50 V and a resistance of 5 W. What is the value of current?
10 A
An electric circuit has a resistance of 20 W. The current is measured to be 6 A. How many volts are applied to the circuit?
120
A toaster is listed as 1560 W. When it is plugged into a 120 V circuit and starts to make toast, how many amperes will it draw?
13
An electrical device is listed as 3,000 watts. Approximately how many horsepower is this?
4
An electric motor is running on 120 V. The current is measured to be 2 A. How many ohms of resistance is the motor?
60
The _____ is equal to one coulomb per second.
Ampere
A complete circuit is often referred to as a(n) _____ circuit.
Closed
What is the term for an amount of charge equal to 6.25 x 1018 electrons?
Coulomb
The force of electrostatic attraction or repulsion is directly proportional to the product of the two charges and inversely proportional to the square of the distance between them. This is _____ law.
Coulomb's
The neutral conductor is also referred to as the _____ conductor.
Grounded
An opposition to current flow that occurs in alternating current circuits is called _____.
Impedance
The velocity of AC through a conductor is _____ the speed of light because magnetic fields travel more slowly in material dielectrics than they do through free air.
Less than
The unit of resistance to current flow is the _____.
Ohm
The statement "in a DC circuit, the current is directly proportional to voltage and inversely proportional to resistance" is know as _____ law.
Ohm's
Opposition to current flow is called _____.
Resistance
A(n) _____ circuit generally occurs when the conductors leading from and back to the power source become connected.
Short
The unit of electrical "pressure" that causes current to flow is called the _____.
Volt
_____ is also referred to as electromotive force (EMF).
Voltage
The _____ is used to measure electrical power being used in a circuit.
Watt
If a circuit is open, current _____ flow.
Will not