Compute for the resistivity of the wire

Question

1. The graph below shows the current vs. voltage characteristics (IV) graph of a filament lamp. At 4.0 V, the current of the filament lamp is?

A. 8x10^-3 A

B. 0.5x10^-3A

C. 16x10^-3A

D. Need more information

2. The graph below shows the current vs. voltage characteristics (IV) graph of a filament lamp. At 4.0V, the resistance of the filament lamp is?

A. 0.25 Ohms

B. 250 Ohms

C. 8000 Ohms

D. 4000 Ohms

3. Base on its IV Graph, the filament bulb is a/an?

A. Ohmic

B. Non-ohmic

C. Same

D. Need more information

4. Compute for the resistivity of the wire (see figure below); (Note: For your response, just input the number, do not add the unit)*

Answer 1

a) I = 16 ma

b) R= 250 ohm

c) rho=.1995