| 101. |
| If the transformer to the right must
supply 45.0 v and 9.00 amps at the secondary coil, what must be
provided to the primary coil? Answer
A. 15.0 v at 3.00 amps
B. 15.0 v at 27.0 amps
C. 135 v at 3.00 amps
D. 135 v at 27.0 amps
|
 |
|
|
|
|
|
|
| 102. |
When measuring
current through a resistor, the ammeter must be connected Answer
|
|
A. |
in series with the resistor |
C. |
after connecting the other
circuit components |
|
B. |
in parallel with the resistor |
D. |
before connecting the other
circuit components. |
|
|
|
|
|
| 103. |
Which of the
following is NOT required for a properly
operating transformer? Answer
|
|
A. |
An alternating
current source connected to the primary coil. |
|
B. |
a direct current
source connected to the primary coil. |
|
C. |
two coils of wire
wound around a common iron core. |
|
D. |
The wires must be
insulated. |
|
|
|
|
|
| 104. |
A step-up
transformer is used to convert 120.0 volt to 1200. volts. If the
primary coil has 500. turns, how many coils are in the secondary coil?
Answer
|
|
A. |
50 |
C. |
1700 |
|
B. |
620 |
D. |
5000 |
|
|
|
|
|
| 105. |
To increase
security, a 100. watt outdoor flood light is replaced with a 150. watt
flood light. The 150. watt light has Answer
|
|
A. |
more resistance and draws more
current |
C. |
less resistance and draws more
current |
|
B. |
more resistance and draws less
current |
D. |
less resistance and draws less
current |
|
|
|
|
|
| 106. |
A transformer has 450. turns in its primary coil and
150. turns in its secondary coil.
If the primary coil has 240. volts and 18.0 amps, what is the potential
and current in the secondary coil. Answer
|
|
A. |
80.0 volts and 6.00 amps |
C. |
720. volts and 6.00 amps |
|
B. |
80.0 volts and 54.0 amps |
D. |
720. volts and 54.0 amps |
|
|
|
|
|
| 107. |
| Which graph represents the relationship between the
deflection of a galvanometer needle and the current passing through
the coil? Answer |
 |
|
|
|
|
|
|
| 108. |
| The south pole of a compass placed at point M, will
point towards
Answer
|
 |
|
|
|
|
|
|
| 109. |
| Based on the magnetic field shown in the diagram to
the right, what is the direction of electron flow in the wire?
A. From A to
B
C. Out of the page
B. From B to
A
D. Into the page
Answer
|
 |
|
|
|
|
|
|
| 110. |
| Which diagram to the right does NOT
correctly show a magnetic field configuration?
Answer
|
 |
|
