Electricity Physics

A student connects a length of unknown material in series with a battery and an ammeter (which measures current flow). When the circuit is complete, the ammeter reads that no current is flowing. The unknown material is most likely ​ ​ (a)  

• an insulator

• a conductor

• a superconductor

• a semiconductor

Which of the following, on average, has the highest electrical resistance value?

• conductors

• insulators

• semiconductors

• superconductors

According to the above diagram, what is the equivalent resistance of the circuit?

• 0.96 Ω

• 1.21 Ω

• 20 Ω

• 284 Ω

Using the diagram above, what is the current leaving the battery?

• 0.40 A

• 2.50 A

• 8.33 A

• 10.67 A

What is the unit of electrical resistance?

• Volt

• Ampere

• Ohm

• Watt

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

Which of the following is a correct representation of Ohm's Law?

• All of the above

Voltage divided by Resistance

(V / R)

• Current

• Power

• Ohms

• Watts

What is the power output in Watts of a lightbulb connected in series to a 1.5 V battery if the current flowing through the circuit is 0.5 A? Record your answer. Be sure to use the correct place value.

Mathematical Equivalence

ON

How many Joules of energy is dissipated by a resistor each minute if the voltage drop across it is 2 V and the current passing through it is 0.1 A? Record your answer. Be sure to use the correct place value.

Mathematical Equivalence

ON