# Fundamentals of Physics Study Set 2

Physics & Astronomy

## Quiz 26 :Current and Resistance

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

D

Current has units:
Free
Multiple Choice

B

Current has units:
Free
Multiple Choice

B

Current is a measure of:
Multiple Choice
A 60-watt light bulb carries a current of 0.5 ampere.The total charge passing through it in one hour is:
Multiple Choice
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
Current in a conductor is normally due to:
Multiple Choice
This figure shows a junction.What is true of the currents?
Multiple Choice
In schematic diagrams, currents are indicated using arrows.What do the arrows indicate?
Multiple Choice
Conduction electrons move to the right in a certain wire.This indicates that:
Multiple Choice
If is the current density and is a vector element of area then the integral over an area represents:
Multiple Choice
Two wires made of different materials have the same uniform current density.They carry the same current only if:
Multiple Choice
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
In a conductor carrying a current we expect the electron drift speed to be:
Multiple Choice
The current is zero in a conductor when no potential difference is applied because:
Multiple Choice
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