# Worksheet: Transformation of Current and Voltage

In this worksheet, we will practice calculating the current and voltage changes due to electromagnetic induction using a step-up or step-down transformer.

**Q2: **

A step-up transformer connected to a 110 V line is used to supply a hydrogen gas discharge tube with 5.0 kV (rms). The tube dissipates 75 W of power.

What is the ratio of the number of turns in the secondary winding to the number of turns in the primary winding?

- A
- B
- C
- D
- E

What is the rms current in the primary winding?

What is the rms current in the secondary winding?

What is the effective resistance seen by the 110 V source?