Magnetic Field and Force

Question 1

A wire runs left to right and carries a current in the direction shown.

Revolt · Accepted Answer

into the screen

Question 2

A student uses the right-hand rule as shown.

Revolt · Accepted Answer

right

Question 3

A point charge of 5.0 × 10–7 C moves to the right at 2.6 × 105 m/s in a magnetic field that is directed into the screen and has a field strength of 1.8 × 10–2 T.

Revolt · Accepted Answer

2.3 × 10–3 N

Question 4

When using the right-hand rule to determine the direction of the magnetic field around a current-carrying straight wire, which part of the right hand points in the direction of the magnetic field?

Revolt · Accepted Answer

fingers

Question 5

A point charge of 5.7 µC moves at 4.5 × 105 m/s in a magnetic field that has a field strength of 3.2 mT, as shown in the diagram.

Revolt · Accepted Answer

6.6 × 10–3 N

Question 6

When using the right-hand rule to determine the direction of the magnetic force on a charge, which part of the hand points in the direction of the magnetic field?

Revolt · Accepted Answer

fingers

Question 7

The magnetic field 0.02 m from a wire is 0.1 T. What is the magnitude of the magnetic field 0.01 m from the same wire?

Revolt · Accepted Answer

0.2 T

Question 8

Which describes the magnetic field that forms when a wire carries an electric current?

Revolt · Accepted Answer

It is in a cylinder around the wire.

Question 9

When using the right-hand rule to determine the direction of the magnetic force on a charge, which part of the hand points in the direction that the charge is moving?

Revolt · Accepted Answer

thumb

Question 10

A positive charge moving up enters a magnetic field pointing out of the screen. What is the direction of the magnetic force on the charge?

Revolt · Accepted Answer

right

Magnetic Field and Force Answers

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