Grade 9 Dynamic Electricity!

What quantity is always the same across all loops of a parallel circuit?

• Current

• Resistance

• Voltage

• Power

Two wires are made of the same material. Wire A is both thinner and colder than wire B. Which would we expect to have a higher resistance value?

• Wire A

• Wire B

• They would have the same value

• Not enough information to say for sure

Celia is in a graphing mood, and wants to construct a V vs. I graph for a given resistor. What would have to be true for the graph to show a linear relationship?

• The resistance is very large.

• The resistor is ohmic.

• The resistor is non-ohmic.

• The resistance is small.

• Not enough information

Antoine feels his circuit containing two resistors connected to a battery in parallel lacks current. How could he increase the total current?

• Use a battery with a lower voltage

• Connect a second battery in parallel

• Connect the resistors in series instead of parallel

• Switch out one resistor for one with a lower resistance value

Which unit would be equal to one joule per coulomb?

• Volt

• Watt

• Ampere

• Kilometer

Do we have our calculators out + math brains on

• Yes

• No

• I do now!!!

Soha creates a circuit with current = 5.0 A and two 3.5 V batteries connected in series. What is its total resistance?

• 1.4 ohms

• 0.70 ohms

• 0.7000 ohms

• 35 ohms