Physics 35

a 50 v battery is connected across a 10 ohm resistor and produces 4.5 a

1.1 ohms ( 50/4, 11.1 -10)

a 60 w light bulb and a 100 w light bulb are both connected in parallel to a 120 v which has more current

100w

what is the equivalent resistance of a 30ohm and a 20 ohm resistor

12 ( 30 x 20/ 30+20)

the total resistance of a 10 ohm resistor and a 7 ohm resistor in a series is

17 ohms

A 20 V potential difference is applied across a parallel or 10

2 a ( 20/10)

a 30 v potential difference is applied across a series of a 8 and 3

2.7 a ( 30/11)

the current through two identical light bulbs are both connected to in a series is .25 a the total voltage across both is 120 v

240

two identical resistors in a parallel have an equivalent resistance of 7 ohms

28 ohms

the total resistance of a 6 ohm resistor and a 12 ohm resistor in parallel

4 ohms

a 2 ohm resistor is connected in a series with a 20 v battery

5 a (20/4)

How many 6 ohms resistors must be connected in parallel to create an equivalent resistance of 1 ohm

6

a 60 v potential difference is applied across a series of 10 an 20

6 a ( 60/10)

In order for current to flow in a circuit, you must have

a switch that is open

In order to form an electric circuit, you need to have

all of the above

fuses and circuit breakers are used to

all of the above

in a simple parallel circuit

all of the above

Two lamps, one with a thick filament and one with a thin filament, are connected in parallel. The voltage is greater in the lamp with the

both voltage are same

When one light bulb in a parallel circuit containing several light bulbs burns out, the other light bulbs

burn the same

A closed circuit is a circuit in which charge

can flow

Two lamps, one with a thick filament and one with a thin filament, are connected in series. The current is greater in the lamp with the

current is same

As more lamps are put into a series circuit, the overall current in the circuit

decreases

a 60w light bulb is connected to a 12v car battery

doubles

In order to make a flashlight bulb light up, all you need to do is to run a wire from the positive terminal of a flashlight battery to the center of the bulb's base.

false

a fuse or circuit breaker used in a circuit

false

in a parallel circuit current is the same

false

when connected in a series an electric circuit provides

false

as are lamps are put into parallel

increases

When resistors are put in series next to each other, their overall resistance is

larger than the resistance of any individual resistor

Compared to the resistance of two resistors connected in series, the same two resistors connected in parallel have

less resistance

electrical resistance is measured in

none of the above

When one light bulb in a series circuit containing several light bulbs burns out

none of the other bulbs will light up

Electrical devices in our homes are connected in

parallel

When two light bulbs are connected in series, the

same amount of current always flows through each bulb

When resistors are put in parallel with each other their overall resistance is

smaller

which of the following is a device used to either cut off or allow

switch

a short circuit occurs when

the positive wire is connected directly to the negative wire

two electrical devices are connected in a series the total resistance is

the sum

Two lamps, one with a thick filament and one with a thin filament, are connected in parallel. The current is greater in the lamp with the

thick filament

When light bulbs are connected in series, all carry the same current regardless of their resistances.

true

When resistors are arranged in parallel

true

a schematic diagram is a simplified

true

in a series circuit the total voltage drop across is

true

in order to prevent overloading in a circuit

true

in a simple parallel circuit

voltage across each branch is always the same

The symbol used to represent resistance in a schematic diagram is

zig zag line