Photo AI
The diagram shows a simple generator connected to a lamp - Edexcel - GCSE Physics - Question 6 - 2013 - Paper 1
Question 6
The diagram shows a simple generator connected to a lamp. The magnet is made to spin at a steady speed. The ammeter gives a reading of 1.5 A. The voltmeter gives a ... show full transcript
Worked Solution & Example Answer:The diagram shows a simple generator connected to a lamp - Edexcel - GCSE Physics - Question 6 - 2013 - Paper 1
Step 1
Step 2
State two changes to the design of the generator that would give a larger output power for the same speed of rotation.
Answer
-
Use more turns on the coil. By increasing the number of turns in the coil, the induced electromotive force (EMF) will increase, leading to higher output power.
-
Employ a more powerful or stronger magnet. Utilizing a magnet with greater strength will enhance the magnetic field strength, thereby increasing the output power.
Step 3
Describe the difference between charge movement in a direct current and in an alternating current.
Answer
In a direct current (DC), electric charge flows in one direction only. This means that the polarity remains constant, and the electrons move steadily from the negative terminal to the positive terminal.
In contrast, an alternating current (AC) causes the charge to change direction periodically. The current flows in one direction for a short time before reversing and flowing in the opposite direction, allowing the charges to move back and forth.