ECAT Physics — Current Electricity
Current Electricity is part of the Physics section of the UET ECAT (30 of the 100 MCQs). It breaks into 5 subtopics, and we hold 38 ECAT-pattern practice MCQs on it, each with a written explanation. Tap a subtopic below to practise just that.
Subtopics (5)
How Current Electricity is tested
Across the 7 ECAT past papers on ParhaiKrlo, Current Electricity accounts for 14 questions. It appears in all 7, about 2 questions a paper. The heaviest was ECAT Past Paper 06, with 4 questions, and the most recent is ECAT Past Paper 07, with 2.
| Paper | Questions |
|---|---|
| ECAT Past Paper 07 | 2 |
| ECAT Past Paper 06 | 4 |
| ECAT Past Paper 05 | 1 |
| ECAT Past Paper 04 | 2 |
| ECAT Past Paper 03 | 1 |
| ECAT Past Paper 02 | 3 |
| ECAT Past Paper 01 | 1 |
Current Electricity MCQs from the ECAT past papers
Try each one before opening the answer. Each comes with a short explanation.
- Q1 · ECAT Past Paper 07 · Current Electricity
A thermistor with a negative temperature coefficient is placed in a furnace. When the temperature of the furnace increases, its resistance:
- A.Decreases
- B.Increases
- C.Remains the same
- D.No effect
Show answer
Answer: A. Decreases — Negative temperature coefficient: resistance falls as temperature rises.
- Q2 · ECAT Past Paper 06 · Current Electricity
A thermistor with a positive temperature coefficient is used to measure the temperature of a furnace. As the furnace gets hotter, its resistance:
- A.Decreases
- B.Increases
- C.Remains unchanged
- D.None of these
Show answer
Answer: B. Increases — A positive temperature coefficient means resistance rises with temperature.
- Q3 · ECAT Past Paper 05 · Current Electricity
A thermistor with a negative temperature coefficient is placed in a furnace. When the temperature of the furnace increases, its resistance:
- A.Decreases
- B.Increases
- C.Remains unchanged
- D.None of the above
Show answer
Answer: A. Decreases — Negative temperature coefficient means resistance falls as temperature rises.