Uses of magnetism

The table shows the potential difference (p.d.) and current for four different transformers.

Which row shows the correct data for an ideal step-down transformer?

	Primary coil p.d. ( $V\text{V}$ )	Primary coil Current ( $A\text{A}$ )	Secondary coil p.d. ( $V\text{V}$ )	Secondary coil Current ( $A\text{A}$ )
A	240	2	120	4
B	120	4	240	2
C	240	2	120	6
D	240	2	240	2

A

B

C

D

Uses of magnetism

The table shows the potential difference (p.d.) and current for four different transformers.

Which row shows the correct data for an ideal step-down transformer?

	Primary coil p.d. ( $V\text{V}$ )	Primary coil Current ( $A\text{A}$ )	Secondary coil p.d. ( $V\text{V}$ )	Secondary coil Current ( $A\text{A}$ )
A	240	2	120	4
B	120	4	240	2
C	240	2	120	6
D	240	2	240	2

A

B

C

D

Uses of magnetism

Uses of magnetism Questions