What current will this array draw from a 35.0 V battery having negligible internal resistance if we connect it across ab.

Complete question is missing, so i have attached it.

A) I = 3.5A

B) I = 4.5 A

C) I = 3.15A.

D)I = 3.25 A

Explanation:

a) When we connect across ab, the resistance from ac and bc is;

20ohms + 10ohms = 30 ohms.

This will now be parallel with the 15 ohms resistor.

Thus, equivalent resistance is;

R = (30 × 15)/(30 + 15)

R = 450/45

R = 10 ohms

Formula for Current is; I = (E/R)

Thus;

I = 35/10

I = 3.5A.

b) similarly, when we connect across bc, resistance from ac and ab is;

15 ohms + 20 ohms = 35 ohms.

This will now be parallel with the 10 ohms resistor.

Thus, equivalent resistance is;

R = (35 × 10)/(35 + 10)

R = 350/45

R = 7.778 ohms.

Current is;

I = 35/7.778

I = 4.5 A.

c) similarly, when we connect across ac, resistance from ab and bc is;

15 ohms + 10 ohms = 25 ohms.

This will now be parallel with the 20 ohms resistor.

Thus, equivalent resistance is;

R = (25 × 20)/(25 + 20)

R = 11.11 ohms.

Current is;

I = 35/11.11

I = 3.15A.

d) since connected across bc, the internal resistance will be added to the circuit resistance, which was seen to be 7.778 ohms in step b above

Thus, equivalent resistance = 7.778 + 3 ohms = 10.778

Current is;

I = 35/10.778

I = 3.25 A

freezing

deposition

condensation

explanation;

melting also called fusion is the process where solid becomes liquid, sublimation is the process where solid becomes gaseous without first changing to liquid, deposition involves change from gaseous to solid state, freezing involves change from liquid to solid, boiling or evaporation involves change of liquid to gaseous state, while condensation is the change from gaseous state to liquid state.

endothermic reactions involves absorption of heat from the surroundings or the environment while exothermic reactions involves loss of heat energy to the surroundings.

in this case, sublimation, evaporation and melting are endothermic reactions (gain energy from the environment) while, freezing, deposition and condensation are exothermic (loss of energy to the surroundings) reactions.