January 30, 2015

Homework Help: science(check answers)

Posted by matt on Monday, March 31, 2014 at 1:11pm.

3.A not sure please help

One light bulb in a string of lights goes out. This causes all of the other lights in the string to also go out. This is an example of a

A. resistor.
B. parallel circuit.
C. closed circuit.
D. series circuit.

2.When a switch is turned from the off to the on position, it is changing the circuit in which of the following ways?

A. An open circuit is being changed into a closed circuit.
B. A closed circuit is being changed into an open circuit.
C. A parallel circuit is being changed into a series circuit.
D. A series circuit is being changed into a parallel circuit.

3.Early telephone poles had wires that connected inside bell-shaped glass enclosures like the ones shown below.

several bell-shaped glass enclosures

These glass enclosures helped to keep the electric current from moving outside the circuit of wires. The glass enclosures were used as

A. insulators.
B. conductors.
C. resistors.
D. switches.

4.Use Ohmís Law to determine the resistance in a circuit if the voltage is 12.0 volts and the current is 4.0 amps.

A. 8.0 ohms
B. 48 ohms
C. 3.0 ohms
D. 12 ohms

5.In a closed circuit, the current only flows from the power source to an electrical device such as a lamp


Answer this Question

First Name:
School Subject:

Related Questions

Maths - A string of decorative lights is 28 ft long the first light on the ...
Science -Check Answers- - 1. A kitchen ceiling light has five light bulbs on it...
maths - A building has three rooms. Each room has two separate electric lights. ...
physics - Your younger brother and you are putting up christmas lights, he broke...
Science - If one light bulb was removed in a circuit I think the others will go...
physics - 010 (part 1 of 5) 10.0 points A string of 26 identical Christmas tree ...
probability - a teacher on her way to work passes through 3 stoplights each ...
Physics - What happens to a bulb when a conductor is wired in series with the ...
math - I have a math question that goes like this: There are 500 light that have...
Physics - #1. Ten Christmas lights are connected in series and plugged into a ...