Mod 6- Question 6 The diagram shows an ideal transformer. Iron core V G When the switch is closed, the pointer on the galvanometer deflects. How could the size of this deflection be increased? A. Decrease the number of primary coils. B. Decrease the number of secondary coils. C. Replace the iron core with a copper core. (D. Place a resistor in series with the galvanometer.
Mod 6- Question 6 The diagram shows an ideal transformer. Iron core V G When the switch is closed, the pointer on the galvanometer deflects. How could the size of this deflection be increased? A. Decrease the number of primary coils. B. Decrease the number of secondary coils. C. Replace the iron core with a copper core. (D. Place a resistor in series with the galvanometer.
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Transcribed Image Text:Mod 6- Question 6
The diagram shows an ideal transformer.
Iron core
V
G
When the switch is closed, the pointer on the galvanometer deflects.
How could the size of this deflection be increased?
A.
Decrease the number of primary coils.
B.
Decrease the number of secondary coils.
C.
Replace the iron core with a copper core.
D.
Place a resistor in series with the galvanometer.
Transcribed Image Text:Mod 6- Question 9
An electric motor is connected to a power supply of constant voltage. The motor runs at
different speeds by adjusting a brake.
Which graph best shows the relationship between the current through the motor and its speed?
B.
Speed
Speed
Speed
C.
Current
Current
0
0
Speed
D.
Current
0
Current
0
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