NS Gr9 Electricity Revision Part 1

A  circuit consists of 2 cells in series, a bulb, an Ammeter, and a switch. The following statement in relation to this circuit is true:

• The cells provide kinetic energy to the circuit

• A current will only flow if the switch is open

• The flow of charge provides potential energy

• The 2 cells connected together form a battery

The unit of measurement of the resistance of a bulb is:

• Volt

• Ampere

• Ohm

• Lux

The best material for the filament of a bulb would be:

• Tungsten

• Copper

• PVC

• Neon

A  circuit consists of 2 cells in series, a bulb, an Ammeter, and a switch. A 1cm nichrome wire is added in series in the circuit and the switch is closed.

• The current will flow more strongly

• The bulb will be dimmer

• The temperature in the nichrome wire will decrease

• The bulb will glow more brightly

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

The resistor in a toaster causes the electrical energy to be converted into:

• Sound and light energy

• Heat and electrical energy

• Heat and light energy

• Sound and heat energy

Tags

NGSS.MS-PS3-3

The following statement is true of resistors:

• Resistors restrict the flow of current

• Resistors allow for the free flow of electricity

• Resistors do not allow the flow of current through them

• Resistors increase the flow of current in a circuit

A series circuit consists of 2 cells in series, 2 identical tungsten bulbs, an ammeter and an open switch. The following statement is true about this circuit:

• The flow of current will be clockwise

• The current will not flow because the switch is open

• The current will flow from the positive to negative terminal of the battery

• The currrent will flow from the negative to the positive terminal of the battery

A series circuit consists of 2 cells in series, 2 identical tungsten bulbs, an ammeter and a closed switch. A voltmeter is added to the circuit to measure the potential difference of the battery. The following statement is true about the voltmeter:

• The voltmeter must be connected in series after the positive terminal of the battery

• The voltmeter, according to Ohms Law, must be connected in parallel across the ammeter

• The voltmeter can be connected anywhere in the circuit because the potential difference is the same throughout the circuit

• The voltmeter must be connected in parallel across the 2 cells of the battery

A series circuit consists of 2 cells in series, 2 identical tungsten bulbs, an ammeter and a closed switch. A voltmeter is connected across the battery. The following statements are all true about the bulbs, except:

• They will both glow equally brightly

• If one bulb goes out, they both will go out because the circuit is broken

• The bulb closest to the positive terminal of the battery will be brughtest

• They will both have the same potential difference

Tags

NGSS.MS-PS3-5

A series circuit consists of 2 cells in series, 2 identical tungsten bulbs, an ammeter and a closed switch. A voltmeter is connected across the battery. The following statement is true about the Ammeter reading:

• It is measuring the number of Ohms in the circuit

• It needs to be connected in parallel

• Never mind where you put it in the series circuit, it will show the identical reading

• The reading will get less the further the ammeter is away from the positive terminal of the battery