Fundamentals of Physics Study Set 2

Physics & Astronomy

Quiz 26 :
Current and Resistance

Quiz 26 :
Current and Resistance

Showing 1 - 20 of 54
Next Quiz
arrow
A car battery is rated at 80 Ah.An ampere-hour is a unit of:
Free
Multiple Choice
Answer:

Answer:

D

arrow
Current has units:
Free
Multiple Choice
Answer:

Answer:

B

arrow
Current has units:
Free
Multiple Choice
Answer:

Answer:

B

arrow
Current is a measure of:
Multiple Choice
Answer:
arrow
A 60-watt light bulb carries a current of 0.5 ampere.The total charge passing through it in one hour is:
Multiple Choice
Answer:
arrow
A 10-ohm resistor has a constant current.If 1200 C of charge flow through it in 4 minutes what is the value of the current?
Multiple Choice
Answer:
arrow
Current in a conductor is normally due to:
Multiple Choice
Answer:
arrow
This figure shows a junction.What is true of the currents? img
Multiple Choice
Answer:
arrow
In schematic diagrams, currents are indicated using arrows.What do the arrows indicate?
Multiple Choice
Answer:
arrow
Conduction electrons move to the right in a certain wire.This indicates that:
Multiple Choice
Answer:
arrow
If is the current density and is a vector element of area then the integral over an area represents:
Multiple Choice
Answer:
arrow
Two wires made of different materials have the same uniform current density.They carry the same current only if:
Multiple Choice
Answer:
arrow
A wire with a length of 150 m and a radius of 0.15 mm carries a current with a uniform current density of 2.8 107 A/m2.The current is:
Multiple Choice
Answer:
arrow
In a conductor carrying a current we expect the electron drift speed to be:
Multiple Choice
Answer:
arrow
The current is zero in a conductor when no potential difference is applied because:
Multiple Choice
Answer:
arrow
The current density is the same in two wires.Wire A has twice the free electron concentration of wire B.The drift speed of electrons in A is:
Multiple Choice
Answer:
arrow
Copper contains 8.4 1028 free electrons per cubic meter.A copper wire of cross-sectional area 7.4 10-7 m2 carries a current of 1 A.The electron drift speed is approximately:
Multiple Choice
Answer:
arrow
The units of resistivity are:
Multiple Choice
Answer:
arrow
If the potential difference across a resistor is doubled:
Multiple Choice
Answer:
arrow
A current of 0.5 ampere exists in a 60-ohm lamp.The applied potential difference is:
Multiple Choice
Answer:
Showing 1 - 20 of 54
Next Quiz