Transformer Coils vs Voltage

Which type of transformer increases the voltage, and decreases the current, minimising energy loss whilst the electricity is transmitted across the national grid?

• Step-down transformers

• Step-up transformers

Tags

NGSS.HS-PS2-5

Which part (A, B or C) is the primary coil?

• A

• B

• C

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Which part (A, B or C) is the secondary coil?

• A

• B

• C

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Which part (A, B or C) is the iron core?

• A

• B

• C

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

Which type of transformer decreases the voltage, and increases the current, making the electricity safe to use in our homes?

• Step-up transformer

• Step-down transformer

In this diagram the electricity is being transmitted from left to right.

Which transformer is the step-up transformer, and which is the step-down transformer?

• A is the step-up transformer, and B is the step-down transformer

• A is the step-down transformer, and B is the step-up transformer

Tags

NGSS.HS-PS2-5

The ratio of turns in the primary and secondary coil will affect:

(Select all that apply)

• The voltage in the secondary coil

• The resistance in the secondary coil

• The current in the secondary coil

Tags

NGSS.HS-PS2-4

When supplied with an alternating current, the primary coil will generate an alternating _____.

• magnetic field

• current

• voltage

Tags

NGSS.HS-PS2-5

What causes a flow of current in the secondary coil?

• electromagnetic induction in the core

• current flows in the core

• electrons flow from the primary coil to the secondary coil

• there is a potential difference between the coils

Tags

NGSS.HS-PS2-5

Why transformers work with A.C. current but not D.C.

• A.C current produces changing magnetic field.

• D.C current produces changing magnetic field.

• D.C current is weak

• A.C current is powerful

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5