Electric

A balloon has a negative charge. A glass rod has a positive charge. What will happen when the rod is brought near the balloon?

• the balloon will be attracted to the rod

• the balloon will remain in place

• the balloon will be repelled by the rod

• the balloon will spin in circles

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

If a substance has an excess number of electrons on its surface, what type of charge does it have?

• negative charge

• positive charge

• neutral charge

• nuclear charge

When objects have equal numbers of positive and negative charges, they are

• positively charged

• negatively charged

• electrically neutral

• unbalanced

What is the charge of the electron

• positive

• no charge

• negative

• neutral

Tags

NGSS.MS-PS1-1

NGSS.MS-PS2-3

Since there are multiple pathways the current can take from the positive side of the battery to the negative side, in a ​ (a)   circuit, the ​ (b)   is divided up among the pathways, but the potential, or voltage, is the same for each pathway. ​In ​ (c)   circuits with only one pathway for the current, the ​ (d)   , or voltage, is divided up among the different elements.

• parallel

• current

• series

• potential

Since there are multiple pathways the current can take from the positive side of the battery to the negative side, in a ​ (a)   circuit, the ​ (b)   is divided up among the pathways, but the potential is the same for each pathway. ​In ​ (c)   circuits with only one pathway for the current, the ​ (d)   is divided up among the different elements.

• parallel

• current

• series

• potential

What is the term used to describe the opposition that a device or material offers to the flow of direct current?

• Resistance

• Capacitance

• Inductance

• Conductance

What is the unit of electrical resistance?

• Volt

• Ampere

• Ohm

• Watt

What type of energy transformation occurs in a battery-powered flashlight?

• Chemical to Electrical to Light

• Electrical to Chemical to Light

• Light to Chemical to Electrical

• Chemical to Light to Electrical

What types of charges attract?

• Positive and Positive

• Positive and Neutral

• Negative and Neutral

• Positive and Negative