Electrical Quantities and Ohm's Law
A current has 50 volts and 5 ohms of resistance. What is the value of current?
10A
A circuit has a resistance of 20 Ohms. The current is 6A. How many volts are applied to the circuit?
120V
Approx how many horsepower is an electric device listed as 3,000 watts?
4 HP
An electric motor is running on 120V, the current is 2A, How much resistance is in the circuit?
60 ohms
What law states that the force of electromotive attraction or repulsion is directly proportional to the product of the two charges and inversely proportional to the square of the distance between them
Coulomb's law
True of false- During normal operation of a typical 120-volt appliance circuit, current flows through the hot, grounding, and neutral conductors
False
True or false -Voltage flows through an electric circuit like water flows through a pipe.
False
The unit of resistance to current flow is:
Ohm
One coulomb per second is equal to
One Ampere
What causes a wire to become warm when current flows through it?
Resistance
True of false- The grounding prong of a plug should never be cut off or be bypassed.
True
What is another term for electromotive force (EMF)
Voltage
The amount of electric power being used in a circuit is measured in
Watts
The amount of potential necessary to cause 1 coulomb to produce 1 joule of work is:
a Volt
A complete circuit is often referred to as a _____ circuit
closed
If a circuit is open, current will:
not flow
What type of circuit generally occurs when the conductors leading from and back to the power source become connected?
short
The neutral conductor is also referred to as:
the Grounded conductor