F5 Chp 3.2 DC Motor
Authored by han guan ng
Physics
KG - University
NGSS covered
Used 145+ times
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11 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When the coil is part of a d.c. motor, what must be connected directly to X and Y?
Tags
NGSS.HS-PS2-5
NGSS.HS-PS3-5
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The diagram shows three pairs of parallel wires with the currents in the directions shown.
Which forces do the pairs of wires experience?
X, Y, Z
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
Each of the diagrams below is a cross-section through two parallel current-carrying conductors.
Which diagram correctly shows the magnetic field pattern formed by the currents in the two conductors?
4.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
A wire hangs between the poles of a magnet.
When there is a current in the wire, in which direction does the wire move?
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the part of a simple d.c. motor that reverses the direction of current through the coil every half-cycle?
6.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
The diagram shows a beam of electrons entering a magnetic field.
What is the effect of the magnetic field on the electrons?
7.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
An alternating current is passed through a wire stretched between the poles of a magnet.
Which way will the wire move?
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