GLENCOE PHYSICAL SCIENCE CHAPTER 7 EXAM QUESTIONS AND
ANSWERS WITH COMPLETE SOLUTIONS 100% GUARANTEED PASS
A transformer has 90 turns in the primary coil and 9 turns in the secondary coil. If
the output voltage is 6V, what is the input voltage?
60 Volts
You have a transformer with 50 turns in the primary coil. if you want to increase
the voltage from 5V to 6V, how many turns should be in the secondary coil?
60 Turns
A transformer has 150 turns in its primary coil and 50 turns in its secondary coil.
If the input voltage is 12V, What is the output Voltage?
4 Volts
A transformer has 1000 turns of wire in the primary coil and 50 turns in the
secondary coil. If the input voltage is 2400V, what is the output Voltage?
120V
A step down transformer reduces a 2400V current to 120V. If the primary coil has
500 turns of wire, how many turns of wire are there on the secondary coil?
25 turns
What is a galvanometer?
an instrument for detecting and measuring small electric currents.
What is the transformer voltage equation?
Output voltage/input voltage= # turns of 2nd coil/# turns of 1st coil
What is direct current?
ANSWERS WITH COMPLETE SOLUTIONS 100% GUARANTEED PASS
A transformer has 90 turns in the primary coil and 9 turns in the secondary coil. If
the output voltage is 6V, what is the input voltage?
60 Volts
You have a transformer with 50 turns in the primary coil. if you want to increase
the voltage from 5V to 6V, how many turns should be in the secondary coil?
60 Turns
A transformer has 150 turns in its primary coil and 50 turns in its secondary coil.
If the input voltage is 12V, What is the output Voltage?
4 Volts
A transformer has 1000 turns of wire in the primary coil and 50 turns in the
secondary coil. If the input voltage is 2400V, what is the output Voltage?
120V
A step down transformer reduces a 2400V current to 120V. If the primary coil has
500 turns of wire, how many turns of wire are there on the secondary coil?
25 turns
What is a galvanometer?
an instrument for detecting and measuring small electric currents.
What is the transformer voltage equation?
Output voltage/input voltage= # turns of 2nd coil/# turns of 1st coil
What is direct current?
