Integrated Physics & Chemistry Quiz 1: Electricity

In the following circuit, the supplied voltage is 1.5 volts and the resistor value is 2 ohms. Use Ohm's law to determine the current in the circuit.

0.75 amps

Which of the following illustrates 2 resistors in a parallel circuit? (pictures)

1

Which of the following are true statements? 1. Like charges repel. 2. Unlike charges attract. 3. Charged objects attract neutral objects due to induction. 4. Unlike charges repel.

1, 2, 3

Which of the following do not illustrate a complete circuit? (pictures)

2, 3

A toaster with a power rating of 1,000 watts is plugged into a household voltage of 120 volts. How much current runs through the toaster?

8.3

Each appliance on the following list is used for 15 minutes. Which used the most energy? Ceiling fan = 30 Coffee maker = 800 Dishwasher = 1300 Electric clothes dryer = 4000

Electric clothes dryer

unit for measuring the strength of an electric current =

ampere

If an atom contains more electrons than protons, it is ________

an anion

A substance that permits the flow of electrons is a(n) =

conductor

The current supplied from a battery is ________ current

direct

In order to reduce the amount of energy lost due to heat flow, electricity is delivered to our homes using _________

low current

unit of electrical resistance =

ohm

Charge q is 1 unit of distance away from the source charge S. Charge p is four times farther away. The force exerted between S and p is _________ the force exerted between S and q.

one-sixteenth

What is not an example of an electrolytic solution?

pure water

Lightning is a discharge of ___________

static electricity

The function of a circuit breaker is to __________________

stop a current that is flowing too fast

The potential of electrons in a circuit can be increased by __________

the action of a battery

unit of electromotive force or electrical potential =

volt

unit of electrical power =

watt