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Ch 19 AP Physics

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Section 1

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The force exerted on a current carrying wire located in an external magnetic field is directly proportional to which of the following?

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Mar 1, 2020

Cards (16)

Section 1

(16 cards)

The force exerted on a current carrying wire located in an external magnetic field is directly proportional to which of the following?

Front

Both A and B

Back

Consider two long straight parallel wires each carrying a current I. If the currents are flowing in opposite directions:

Front

The 2 wires will repel each other

Back

A circular current loop is placed in an external magnetic field. How is the torque related to the radius of the loop?

Front

directly proportional to the radius squared

Back

The current in a long wire creates a magnetic field in the region around the wire. How is the strength of the field at distance r from the wire center related to the magnitude of the field?

Front

field inversely proportional to r

Back

The magnetic field of the earth is believed to be responsible for which of the following?

Front

deflection of charged cosmic rays

Back

A current in a solenoid coil creates a magnetic field inside that coil. The field strength is directly proportional to:

Front

the current

Back

A current in a long straight wire produces a magnetic field. The magnetic field lines:

Front

form circles that go around the wire

Back

The path of a charged particle moving parallel to a uniform magnetic field will be:

Front

straight line

Back

The direction of the force on a current carrying wire located in an external magnetic field is which of the following?

Front

Both A and B are valid

Back

Geophysicists today generally attribute the existence of the Earth's magnetic field to which of the following?

Front

convection currents within the liquid interior

Back

assume that a uniform magnetic field is directed into this page. if an electron is with an initial velocity directed from the bottom edge to the top edge, which of the following describes the direction of the resultant force acting on the electron?

Front

to the right

Back

The magnetic domain in a non-magnetized piece of iron are characterized by which orientation?

Front

random

Back

Which of the following devices makes use of an electromagnet?

Front

Both A and B

Back

a proton is released such that its initial velocity is from the right to left across this page. the proton's path, however, is deflected in a direction toward the bottom edge of the page due to the presence of a uniform magnetic field. what is the direction of this field?

Front

into the page

Back

A current in a solenoid with N turns creates a magnetic field at the center of that loop. The field strength is directly proportional to:

Front

Both choices a and b are valid.

Back

The term magnetic declination refers to which of the following?

Front

angle between direction to true north and magnetic north

Back