It is so will award !

1. a current of 1.50 a flows through the leads of an electric appliance. how long does it take for 7.50 c of charge to pass through the leads?

a. 2.00 s

b. 11.0 s

c. 6.00 s

d. 5.00 s

2. the si unit of current is equivalent to

a. a volt per meter

b. an ampere per second

c. an ohm per degree celsius

d. a coulomb per second

3. the temperance of a superconductor is gradually lowered. at the critical temperature, how does the resistivity of the superconductor change?

a. it reaches a constant positive value.

b. it suddenly drops to zero.

c. it begins a gradual decrease.

d. it experiences a spike to its highest value.

4. a cylindrical metal rod has a resistance r. a second rod that is made of the same material has triple the length and triple the diameter of the first rod. what is the resistance of the second rod?

a. r

b. 3r

c. 9r

d. r/3

5. during a random lightning strike from a cloud to the ground, a current of 25,000 a last for 40 us. how much charge is transferred from the cloud to earth during that strike?

a. 2.0 c

b. 1.6 c

c. 1.0 c

d. 2.5 c

7. the si unit ohm is equivalent to one

a. coulomb per second

b. volt per ampere

c. ampere per meter

d. coulomb per particle

8. he ductile metal wire has resistance are. then the wire is stretched to three times its original length. the stretching shrinks the diameter of the wire, but does not affect its density or resistivity. what is the resistance of the stretch wire?

a. 9r

b. 3r

c. r/3

d. r/9

10. which material has the highest resistivity?

a. glass

b. steel

c. lead

d. nichrome alloy