AP Physics 1: Current and Circuits ☺️

Which of the following safety devices measure or react to specific levels of current?

fuse, circuit breaker, ground fault circuit interrupter (GFCI) - All the above

In an electrical circuit, a voltage difference:

supplies energy to make charges flow

How would you draw two resistors in parallel?

side by side or one on top of the other (A and B)

How would you draw a series circuit?

both in a row

Three 6 ohm resistors are in series. What is the total resistance?

18 ohm

What is the voltage drop across each branch of a parallel circuit?

depends on whatever the battery is

If electricity costs 10 cents per Kw\*Hr, how much does it cost to run a 60 w bulb for one hour?

$0.006

Which of the following statements best describes the difference between series and parallel?

series have a single path, parallel have two or more

The current in a DC series circuit?

is the same at all points

You use a 1200W dryer for 15 min and 100W bulb for 1hr. How much electricity did u use?

400 watt-hours

Electric current will pass easily through:

a conductor

3 amps for current passes through a bulb of 1.5 ohms. What is the voltage of the battery?

4\.5 V

Almost all of the electrons following through a battery circuit come from:

atoms in the wires

In an electrical circuit, the term current refers to:

flowing charges

An ohm is the unit of measurement for:

resistance (ohm)

Direct current (DC) and alternating current (AC) differ in:

the direction of charge flow

What does a power company sell to its customers?

energy (1kWhr = 3.6\*10 J)

What is the voltage drop across 3 individuals identical resistors in series with a 3V battery?

1 volt

The electrical outlets in your home are wired in:

parallel (so the entire house does not go out)

If a microwave oven draws 11A when plugged into 120V, what is the power rating?

1\.32 kW

Power describes the rate of ___. Power is calculated in a circuit by multiplying ___?

energy flow, current

The mathematical relationship between current, voltage, and resistance is known as:

Ohm’s Law

When you talk about a batter’s voltage, you are referring to:

amount of energy per unit charge

Kirchoff’s current law applies to a parallel circuit because it states that:

all current flowing into a branch must flow out again

Positive electric charge:

repel positive charges and attract negative charges