HPS - electricity

Multiple Choice

What type of charges attract each other?

• Same charges

• Opposite charges

• Neutral charges

• No charges

Multiple Choice

What does the force between electric charges depend on?

• The color of the charges.

• The amount of charge and distance between the charges.

• The temperature of the environment.

• The speed of the charges.

Multiple Choice

What letter is used to denote "charge"?

• k

• q

• r

Multiple Choice

What does the "k" represent in Coulomb's Law?

• charge

• Coulomb's Constant

• kilometers

• distance between charges

Multiple Choice

What happens to the force between two charged objects when you double the distance between them?

• it doubles

• it is cut in half

• it quadruples

• it is cut by 1/4

Multiple Choice

A 5 C and 8 C are 8 m apart. What is the force between them?

• 5.625 x 10⁹

• 5.625 x 10^-9

• 4.5 x 10¹⁰

• 4.5 x 10^-10

Multiple Choice

According to the Triboelectric Series, which of the following is TRUE?

• All objects rubbed together generate charges

• Different objects rubbed together produce different charge transfers

• No objects rubbed together transfer charges

Multiple Choice

When a plastic rod is rubbed with wool, the wool acquires a positive charge because

• protons are transferred from the wool to the rod
• electrons are transferred from the rod to the wool
• electrons are transferred from the wool to the rod

Multiple Choice

What charge does human hair acquire when rubbed with a rubber balloon?

• Positive

• Negative

• Neutral

Multiple Choice

Walking across a carpet is an example of charge being transferred by

• friction.
• induction.
• conduction

Multiple Choice

Moving a charged rod close to an electroscope is an example of:   

• charging by induction
• charging by friction

• charging by conduction

Multiple Choice

What is the definition of alternating current?

• An electric current that flows in one direction only.

• An electric current that is constant.

• An electric current that reverses direction periodically.

Multiple Choice

Which type of current is commonly used in household appliances?

• AC

• DC

Multiple Choice

Which type of current is commonly used in electronic devices ( like flashlights)?

• AC

• DC

Multiple Choice

What is Resistance?

• The flow of electrons
• Electric potential difference
• The ability to reduce the flow of electrons

Multiple Choice

Current is like ______________________.

• the hose being squeezed

• the water flowing from the hose

• the dog running through the yard

Multiple Choice

Current times Resistance equals
 (I X R)

• Power
• Voltage
• Amperage
• Ohm

Multiple Choice

Voltage divided by Resistance

(V / R)

• Current

• Power

• Ohms

• Watts

Multiple Choice

What is the Voltage of a circuit that has a resistance of 5 Ω and a current of 2 A?

• 25 V
• 10 V
• 2.5 V

Multiple Choice

The voltage supplied to a circuit is 17 V and the current running through is 10 A. What is the power generated?

• 170 W
• 170 A
• 1.7 V
• 1.7 W

Multiple Choice

Calculate the electric power of an electrical appliance in which 10 A of current is flowing through a resistor of 2 ohms.
 
Remember: V=IR and P=VI

• 80 W
• 200 W
• 2.5 A
• 22.5 KJ

Multiple Choice

What will be the current drawn by an electric bulb of 1000 W when it is connected to a source of 220 V?
Remember: I = P/V

• 4.55 A
• 28800 J or 28.8 KJ
• 80 W
• 200 W

Multiple Choice

If an oven has a power of 2000 W and the voltage is 230 V what fuse is required?

• 3A
• 5A
• 13A

Multiple Choice

Is the amount of energy being transferred over a period of time.

• Power
• Energy
• voltage

Multiple Choice

Which appliance transfers the most energy per second? 

• Clock
• Lamp
• Desktop Computer
• Iron

Multiple Choice

A kettle transfers 1000J of energy every 2 seconds. Calculate its power.

• 2000 Watts
• 1000 Watts
• 500 Watts

Multiple Choice

What kind of circuit is pictured?

• series
• parallel
• open
• lighted

Multiple Choice

If you add another bulb in parallel,_____

• The bulbs get brighter

• The bulbs get dimmer

• The bulb brightness stays the same

• All the bulbs will go out

Multiple Choice

If the top bulb goes out,

• All the bulbs go out

• The other bulbs get dimmer

• There is no effect on the other bulbs

• The other bulbs get brighter