ELE100 Quiz 1

An electrical circuit has a voltage of 50 V and a resistance of 5 W. What is the value of current?

10A

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's power rating 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

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 distance between them. This is _____ law.

Coulomb's

The statement "current is directly proportional to voltage and inversely proportional to resistance" is know as _____ law.

Ohm's

Voltage does not flow, but is the "pressure" that makes current flow.

True

A flow of one coulomb per second past a point in a circuit describes a(n)

ampere

In order to have current flow, a circuit must be

closed

The speed of travel of electrical current in a conductor is _____ the speed of light.

greater than

The neutral conductor is also referred to as the _____ conductor.

grounded

Conventional current flow theory considers electricity to be the flow of charge carriers which are _______________ in polarity.

negative

The unit of resistance is the

ohm

Opposition to current flow is called

resistance

In a circuit, when the two conductors leading from the power source touch metal-to-metal, this is called a _____ circuit.

short

The unit of electrical "pressure" that causes current to flow is called the

volt

The unit of electromotive force is the

volt

The unit of electrical power is the

watt