# AP (Advanced Placement) Physics(B-C): Questions 742 - 745 of 921

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## Question number: 742

MCQ▾

### Question

A pair of conducting wires of length spaced apart. If wires carrying direct current, such that the magnitude of force between these wire is ; then current in the wire is:

### Choices

Choice (5) Response

a.

b.

c.

d.

e.

Question does not provide sufficient data or is vague

## Question number: 743

MCQ▾

### Question A Mass of 2 Kg Suspended by Two Ropes In figure, a mass of 2 kg suspended by two ropes is shown.

As shown in above figure, a mass of suspended by two ropes. Rope – 1 is at right angle with vertical and Rope – 2 made angle with vertical. If mass is at equilibrium, then which of the following is showing correct tensions of ropes? (Take )

### Choices

Choice (5) Response

a.

b.

c.

d.

e.

All of the above

## Question number: 744

MCQ▾

### Question

The conducting wire of length and cross section , have resistivity . What is the resistance of the wire?

### Choices

Choice (5) Response

a.

b.

c.

d.

e.

All of the above

## Question number: 745

MCQ▾

### Question The Paths of a Proton in Electric Field In figure paths of a proton in electric field is shown.

Two protons are positioned in uniform electric field at and in figure. Both charges are moved from their original position , and reached at point C. What is the net change in potential due to these motions of protons?

### Choices

Choice (5) Response

a.

b.

c.

d.

None of the above

e.

Question does not provide sufficient data or is vague