Electricity MCQ Test 2 Answer Guide – Science Homework Answer Guides

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1 pt(s).

The diagram below shows a game where players try to move a metal needle through three metal paper clips without letting the needle touch the clips. A bulb lights when the needle touches a paper clip, signaling that the player has lost. Why does the bulb light when the needle touches a paper clip?

Convection currents are started

Vibrations set up wavelike disturbances

A circuit is completed

A state change occurs

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1 pt(s).

Look at the circuit below. Both bulbs are identical. Bulb X would be

dimmer than bulb Y

brighter than bulb Y

just as bright as bulb Y

.
1 pt(s).

Look at the circuit below. Both bulbs are identical. Bulb X is

dimmer than bulb Y

brighter than bulb Y

just as bright as bulb Y

.
1 pt(s).

Two circuits were set up as shown below. All the bulbs in both circuits were identical. Comparing circuits 1 and 2, bulb X is

dimmer than in circuit 1

brighter than in circuit 1

the same as in circuit 1

.
1 pt(s).

Look at the circuit diagram below. The current at position S is 4A. The current at position T is 2A. What is the current at position P?

.
1 pt(s).

Look at the circuit diagram below. The current at position S is 4A. The current at position T is 2A. What is the current at position R?

.
1 pt(s).

Look at the circuit diagram below. The current at position S is 4A. The current at position T is 2A. What is the current at position Q?

.
1 pt(s).

Look at the circuit diagram below. For bulb M to light up,

only switch P must be closed

only switch Q must be closed

both switches must be closed

neither switch need be closed

.
1 pt(s).

Look at the circuit diagram below. For bulb N to light up,

only switch P must be closed

only switch Q must be closed

both switches must be closed

neither switch need be closed


. 1 pt(s).	The lights in your home are wired
	A.	in parallel, so that if one fails the remainder stay on
	B.	in series, so that if one fails the remainder stay on
	C.	in parallel, so that if one fails all the lights go off
	D.	in series, so that if one fails all the lights go off