Moving Charges and Magnetism Test

Result

Moving Charges and Magnetism Test - 54

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Weekly Quiz Competition

Question 1
4 / -1

Which of the following graphs shows the variation of magnetic induction B with distance r from a long wire carrying current

A

B

C

D

Solution
Question 2
4 / -1

Two very thin metallic wires placed along X and Y–axis carry equal currents as shown here. AB and CD are lines at 45° with the axes with origin of axes at O. The magnetic field will be zero on the line

A
AB

B
CD

C
Segment OB only of line AB

D
Segment OC only of line CD
Question 3
4 / -1

Two long parallel wires are at a distance 2d apart. They carry steady equal current flowing out of the plane of the paper, as shown. The variation of the magnetic field B along the line XX\'is given by

A

B

C

D

Solution
Question 4
4 / -1

Two parallel beams of protons and electrons, carrying equal currents are fixed at a separation d. The protons and electrons move in opposite directions. P is a point on a line joining the beams, at a distance x from any one beam. The magnetic field at P is B. If B is plotted against x, which of the following best represents the resulting curve

A

B

C

D

Solution
Question 5
4 / -1

A long thin hollow metallic cylinder of radius ‘R’ has a current i ampere. The magnetic induction ‘B’–away from the axis at a distance r from the axis varies as shown in

A

B

C

D

Solution
Question 6
4 / -1

The correct curve between the magnetic induction (B) along the axis of a long solenoid due to current flow i in it and distance x form one end is

A

B

C

D

Solution
Question 7
4 / -1

A particle of charge q and mass m is moving along the x–axis with a velocity v and enters a region of electric field E and magnetic field B as shown in figure below. For which figure the net force on the charge may be zero

A

B

C

D

Solution
Question 8
4 / -1

A

B

C

D
Zero

Solution
Question 9
4 / -1

The (τ – 0) graph for a coil is

A

B

C

D

Solution
Question 10
4 / -1

A uniform magnetic field B and a uniform electric field E act in a common region. An electron is entering this region of space. The correct arrangement for it to escape undeviated is

A

B

C

D

Solution